36results about How to "High standard" patented technology

The invention discloses an electric meter intelligent communication detection method and system based on a power line carrier, and relates to the technical field of electric meter communication detection, and the method comprises the steps: collecting the communication data of an electric meter at different time periods, inputting an electric meter communication state dynamic sensing model, analyzing features, and obtaining an initial evaluation result; channel characteristic parameters are calculated by using a carrier channel characteristic dynamic estimation algorithm based on the result, and the channel characteristic parameters are input into a power carrier signal demodulation optimization algorithm to generate an optimized demodulation scheme; signals are demodulated and data are verified according to the scheme, related results are uploaded to an electricity meter communication performance optimization management platform, and the platform evaluates performance and generates optimization suggestions and fault early warning. The system comprises a data acquisition unit, a state analysis unit, a channel calculation unit, a demodulation optimization unit, a data processing unit and a performance management unit which operate cooperatively. The communication state can be dynamically sensed, the channel characteristics can be accurately estimated, the demodulation process can be optimized, the integrated management of the communication performance can be realized, and the accuracy and reliability of the electric meter communication can be improved.

This invention proposes a method for predicting the health status of lithium batteries based on multidimensional features and neural network constant differential equations. The method includes the following steps: S1, preprocessing the capacity data and charging stage operation data collected during lithium battery operation, and constructing features from historical health status data; S2, constructing multidimensional feature inputs for health status prediction based on the charging stage operation data; S3, inputting the multidimensional features into a gated recurrent unit network to fuse and encode the historical health status sequence and constant current charging stage features to obtain a potential feature representation characterizing the battery degradation state; S4, comparing the predicted health status value output by the neural network constant differential equation model with the corresponding actual health status value, calculating the prediction error, and evaluating the prediction accuracy. This application achieves high-precision prediction of lithium battery health status by integrating a multidimensional feature screening mechanism and a continuous-time state evolution modeling method.

The invention provides a composite material, a preparation method thereof and conductive slurry, and belongs to the technical field of conductive materials. The preparation method comprises the steps that a base material is pretreated, an activated base material is obtained, and the base material comprises copper powder or nickel powder; and an atomic layer deposition technology is adopted, a coating layer is deposited on the surface of the activated base material, the composite material is obtained, and the coating layer comprises a silver layer. The composite material prepared by the invention has the characteristics of uniform and compact coating, controllable thickness, strong interface bonding force, strong oxidation resistance, stable performance and the like, and the performance of the conductive slurry can be remarkably improved.

The utility model discloses a connecting rod needle bending device, which belongs to the technical field of needle bending devices, and comprises a bottom plate, support upright posts are symmetrically fixed on the surface of the bottom plate, an article positioning block is arranged between the two groups of support upright posts, a guide rail fixed on a corner bending die is arranged below the article positioning block, and the surface of the guide rail is connected with a sliding block in a sliding manner; a pin bending fixing plate is mounted on the surface of the sliding block, and a corner bending die connecting rod is fixed at the front end of the pin bending fixing plate; the pressing plate connecting block pushes the angle bending die connecting rod to move, so that the angle bending die connecting rod drives the angle bending die to move, the angle bending die is used for bending a product, winding wires and soldering tin on pins and then bending the pins, the requirement for a pin bending mechanism is high, the winding parts of the pins need to be avoided, and bending can be conducted in place.

The utility model discloses a building integrated photovoltaics (BIPV) guide rail type water guide groove connecting structure and a water guide assembly, the connecting structure comprises a supporting groove and a limiting piece, the limiting piece is located on the inner bottom wall of the supporting groove and longitudinally extends along the supporting groove, the cross section of the limiting piece is T-shaped, the limiting piece is used for being embedded with a guide groove in the outer bottom wall of the water guide groove, and the two ends of the supporting groove are open. The supporting groove is used for being inserted into the ends of the two water guiding grooves, the inner wall of the supporting groove can be attached to the outer walls of the water guiding grooves, first flat edges are arranged at openings in the two sides of the supporting groove, second flat edges are arranged at openings in the two sides of the water guiding grooves, the first flat edges are attached to the second flat edges, and locking pieces are arranged on the first flat edges and the second flat edges. The connecting structure is used for limiting the relative displacement of the supporting groove and the water guiding groove in the longitudinal direction and is good in waterproofness, good in wind uplift resistance and easy to install. The water guide assembly has long-acting water resistance and structural stability in a complex environment, and is simple in structure, convenient to disassemble and assemble, convenient to machine, low in material consumption and large in water guide amount.

The utility model discloses an LED display screen monitoring system, and relates to the technical field of LED display screens. The LED display screen monitoring system comprises an upper computer, a sending card, a plurality of Hub cards and a plurality of lamp panels, wherein the upper computer is connected with the sending card through a gigabit network port; the sending card is used for broadcasting a monitoring instruction to the outside; the Hub card comprises a first FPGA module, an MCU module, a gigabit phy module and an external interface module, the first FPGA module is used for collecting sensor data of a connected lamp panel, the MCU module is used for communicating with the first FPGA module, the gigabit phy module is used for communicating with the sending card, and the first FPGA module communicates with the lamp panel through the external interface module; the lamp panels are provided with sensing modules, and the sensing modules are used for monitoring sensor data of the corresponding lamp panels and sending the sensor data to the corresponding Hub cards. The LED display screen monitoring system provided by the utility model has the advantages of high monitoring efficiency, accuracy and rapidness.

The utility model relates to an electric hoist steel structure, include: support leg, its upper end connects girder, girder is I -steel structure, reinforcing rib is connected between support leg and girder, forms stable triangle support system, track one is fixedly connected in the lower extreme of girder, track two is slidably connected in the lower extreme of track one and can move along track one, electric hoist is slidably connected in the lower extreme of track two and can move along track two. Track system is composed of track one fixedly connected in the lower extreme of girder and slidably connected track two, realizes the bidirectional movement function of electric hoist. The utility model solves the problem that the existing electric hoist support structure is insufficient in stability, is limited in operation range and is inconvenient to maintain, has the advantages such as stable structure, strong carrying capacity, large operation range, high positioning accuracy, convenient maintenance, can be widely applied in the material handling operation of factory, warehouse and other places, and significantly improves work efficiency and safety.

This invention relates to the field of audio circuit hardware technology, and in particular to a low-latency ARC circuit configuration method and system based on I2S audio switching. External video data is received through an ARC circuit compatibility interface and input to a video conversion chip for data separation, achieving synchronous separation of I2S audio signals and MIPI video signals. The separated I2S audio signals are then simulated and sent to the host SOC and external I / O terminals respectively by a first-stage audio switching chip. Through link delay analysis and instantaneous delay judgment, the audio path is dynamically configured to achieve switching control between the internal processing path and the direct path. A second-stage audio switching chip realizes multi-channel audio multiplexing and direct transmission simulation, achieving a low-latency, highly compatible ARC audio output scheme while ensuring audio and video timing alignment. This invention can significantly reduce the direct transmission latency of ARC audio while ensuring audio and video synchronization and system compatibility, and improves the flexibility and reliability of audio path configuration.

The utility model discloses a pure humidifier evaporation sheet mold structure. The pure humidifier evaporation sheet mold structure comprises a front mold and a rear mold, the front mold is provided with five rows of cooling water channels with the diameter of 8mm; and the rear mold is provided with four rows of cooling water channels with the diameter of 8mm. And the ejection structure adopts 12 round ejection rods with the diameter of 10mm on the outer ring and 6 round ejection rods with the diameter of 2mm on the inner ring. A two-stage exhaust groove structure is adopted, wherein 36 exhaust grooves are evenly distributed around the outer circle of an evaporation piece in the circumferential direction; a circle of circular air entraining groove with the depth of 0.3 mm and the width of 5 mm is formed in the periphery of the 36 exhaust grooves; a two-plate mold structure is adopted, one mold has two cavities, and each cavity is provided with a glue feeding structure of a one-point needle valve type hot runner. The formed product is large in diameter, thin in thickness, light in weight, clear and complete in micro-convex structure, free of deformation and good in flatness, and the high requirement of the pure humidifier for the evaporation piece is met.

This application provides a positive electrode active material, a method for preparing the same, a secondary battery, and an electrical device. The positive electrode active material comprises a polyanionic compound having the general formula shown in Formula I. The crystallinity of the positive electrode active material is 0.8–1, wherein M includes at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W, and Pb; 1≤x≤7, 1≤y1+y2≤4, 1≤z≤2, and 1≤k≤4. This positive electrode active material has a high degree of crystallinity, which is beneficial for improving the initial discharge capacity of the battery.

This invention relates to the field of propylene polymerization, and discloses a polypropylene, its preparation method, and its applications. The polypropylene has a molecular weight distribution of 6-20; at 230℃, a melt index of 0.1-10 g / 10 min with a loading of 2.16 kg; an isotactic index ≥97%; a fraction with a weight-average molecular weight M ≥ 5 million g / mol containing ≥1 wt%, a fraction with 1000 g / mol < M < 50000 g / mol containing 5-30 wt%, a fraction with 50000 g / mol ≤ M < 5 million g / mol containing 60-90 wt%, and a fraction with M ≤ 1000 g / mol containing <1 wt%; a melt strength ≥0.4 N at 230℃; a heat distortion temperature ≥95℃; and a flexural modulus ≥1800 MPa. This polypropylene exhibits high isotacticity, a wide molecular weight distribution, high flexural modulus, and also high melt strength and heat resistance.

This application provides a vehicle-mounted communication terminal, a vehicle-mounted communication system, and a vehicle, relating to the field of vehicle networking technology. The vehicle-mounted communication terminal includes a processing component and a satellite short message component. The satellite short message component is connected to the satellite communication terminal of the processing component. A general-purpose integrated circuit card (GPIC) is built into the satellite short message component, containing a BeiDou user identifier. The processing component receives communication information and sends it to the satellite short message component. The satellite short message component sends the communication information and the BeiDou user identifier to the BeiDou satellite in short message format. The communication information includes receiving device information and specific communication content. The BeiDou user identifier is used to uniquely identify the vehicle-mounted communication terminal in the BeiDou network. This application can solve the problem of vehicles being unable to communicate when terrestrial communication networks are unavailable.

The application provides an adjustable height supporting pillow, and relates to the technical field of pillows, which comprises a supporting seat, the top of the supporting seat is provided with a supporting plate, the supporting seat is provided with a containing cavity, the containing cavity is provided with a telescopic assembly for being connected with the supporting plate and a driving assembly for driving the telescopic assembly to perform telescopic adjustment, the top of the supporting plate is provided with a soft pillow, the height of the supporting plate is flexibly adjusted through the cooperation of the driving assembly and the telescopic assembly, and then the supporting height of the soft pillow is adjusted, personalized support is provided, and the requirements of different individuals on the height of the pillow under different sleeping postures are met; compared with the pillow with increased or decreased filling for adjusting the height, the application makes the adjusting process simple through the cooperation of the driving assembly and the telescopic assembly; compared with the pillow with a gas bag for adjusting the height, the application is stable in support through the combined structure of the supporting seat, the supporting plate, the telescopic assembly and the driving assembly.

The utility model discloses a water replenishing mechanism for hydrogen production equipment, which comprises the hydrogen production equipment and a water storage device, and a filtering and disinfecting box is arranged between the hydrogen production equipment and the water storage device; the filtering and disinfecting box comprises a box body, the upper layer of the box body is a disinfecting chamber, the lower layer of the box body is a filtering chamber, and the filtering chamber is communicated with the disinfecting chamber through a connecting elbow; a double-floating-ball liquid level switch used for detecting high and low water levels in the hydrogen production equipment is arranged in the hydrogen production equipment; the filtering and disinfecting box with the filtering chamber and the disinfecting chamber is arranged for treating water, the quality of water entering the hydrogen production equipment is improved, the high requirement of the hydrogen production equipment for the water quality is met, meanwhile, the double-floating-ball liquid level switch is arranged for detecting the high water level and the low water level in the hydrogen production equipment, and the water quality is improved. Whether water needs to be supplemented is judged according to the internal water level state of the hydrogen production equipment, and the problem that the water level cannot be detected in time in the sealing operation process of the hydrogen production equipment is solved.

The present application relates to the field of olefin catalytic polymerization, and aims to provide a catalytic system for preparing ultra-pure isotactic polypropylene and application thereof.The catalytic system comprises three components of a main catalyst, a cocatalyst and an external electron donor; wherein the main catalyst is a TiCl4 / MgCl2.ID supported high-efficiency spherical Ziegler-Natta catalyst, ID refers to diisobutyl phthalate or 2,2-diisobutyl-1,3-dimethoxypropane as an internal electron donor; the cocatalyst is a mixture of triethyl aluminum and triisobutyl aluminum; and the external electron donor is diisopropyl dimethoxysilane; or the cocatalyst is triethyl aluminum; and the external electron donor is a mixture of cyclohexyl methyl dimethoxysilane and dicyclopentyl dimethoxysilane.The catalytic system provided by the present application is simple to operate, does not need to synthesize complex-structure alkyl aluminum or siloxane, has controllable cost, and is easy to industrialize; and the product meets the requirements of low ash content, high polymerization activity and high isotacticity at the same time.

The invention relates to a composite conductive ink containing a mica functional filler and a preparation method thereof, and relates to the field of conductive inks, the composite conductive ink comprises the following components by weight: 15-25 parts of organic resin, 20-35 parts of a solvent, 15-20 parts of a first conductive filler, 10-15 parts of a second conductive filler, 0.8-2 parts of a coupling agent, and 3-5 parts of an auxiliary agent; the first conductive filler is modified mica powder, and the modified mica powder is obtained by modifying mica powder through carbon dioxide supercritical fluid carrying imidazolium ionic liquid containing long straight chain alkyl. Compared with the prior art, the special modified mica powder and the special modified flaky copper powder are mainly introduced and are matched for use and have a synergistic effect, so that the resistance of the conductive ink is reduced, the bending resistance of a conductive ink coating is remarkably improved, and the use requirements in the field of flexible electronics are met.

The utility model relates to a 2P~4P traditional miniature circuit breaker intelligent power distribution module connecting device, aims at solving the problem of single function, poor expansibility of traditional 2P~4P traditional miniature circuit breaker, and poor commonality of intelligent miniature circuit breaker. The device is composed of intelligent power distribution module connecting device, dovetail groove base etc. traditional 2P~4P traditional miniature circuit breaker is connected with intelligent power distribution module connecting device through round copper bar hard connection, and circuit breaker of different connection height is adapted by utilizing dovetail groove base. The device makes traditional miniature circuit breaker have accurate measurement, multidirectional protection, Ethernet communication function, and strong adaptability, and is convenient for on-site reconstruction project implementation.

This invention discloses an automatically target-changing pulsed laser deposition apparatus and method. The apparatus includes a process chamber, a transfer valve, and a buffer chamber. The process chamber is connected to the buffer chamber via the transfer valve and is configured as an internal vacuum chamber. The buffer chamber has a door at its upper part and operates as a vacuum chamber. A sample stage is located on the upper inner side of the process chamber. Two neck tubes are located on the two sides of the process chamber for guiding an external laser source and mounting a laser detection device, respectively. The process chamber also includes a rotatable target stage for loading and unloading targets from the buffer chamber. The buffer chamber includes a rotating target stage mechanism and a vision camera for placing the target material and recording the bottom features of the target material, respectively. This invention provides an automatically target-changing pulsed laser deposition apparatus and method with a compact structure, precise positioning, and automatic target changing capabilities, enabling fully automated deposition of ultrapure thin films.

The invention discloses a dust treatment device for semiconductor material preparation, and belongs to the technical field of semiconductor processing, the dust treatment device comprises a box body, one end of the box body is fixedly connected with a first connecting plate, one end, far away from the box body, of the first connecting plate is fixedly connected with a first driving mechanism, the first driving mechanism is fixedly connected with a first dust collection head, and the first dust collection head is detachably connected with a flexible hose; a flexible hose is arranged in the box body and communicates with the interior of the box body, an air inducing mechanism is arranged in the box body and communicates with the flexible hose, the air inducing mechanism communicates with a dust treatment mechanism, the dust treatment mechanism comprises a first partition plate fixedly connected into the box body, and a first filtering part is fixedly connected between the first partition plate and the inner wall of the box body; a second filtering part is arranged on the side, away from the first partition plate, in the box. The flexible hose is matched with the driving mechanism, long-distance and multi-angle dust capturing is achieved, the application range is wide, by arranging the first filtering part and the second filtering part, the cleanliness of exhausted gas is ensured, and the high requirement of semiconductor production for the environment is met.

The invention provides state self-sensing type lightning protection equipment, method and system. The state self-sensing type lightning protection equipment comprises a lightning arrester body, a lightning arrester insulating base, a first self-sensing monitoring module integrated in the lightning arrester body, and a second self-sensing monitoring module and a communication and control unit which are integrated in the lightning arrester insulating base, the first self-sensing monitoring module is used for monitoring temperature and humidity information in the lightning arrester body in the operation process of the lightning arrester; the second self-sensing monitoring module is used for monitoring full-working-condition current of the lightning arrester body under normal operation and internal and external overvoltage effects; the communication and control unit is used for analyzing and processing the waveform of the full-working-condition current, determining action information and position information of the lightning arrester, and sending the action information and position information of the lightning arrester, the waveform of the full-working-condition current and the temperature and humidity information to an internal network of a power grid; the problems of insufficient real-time performance, data isolation, lack of life evaluation, low intelligent level and the like of the running state monitoring of the existing lightning protection equipment are solved.

The application provides polybutene-1 and a preparation method thereof, a non-metallocene catalyst used in the preparation method and a preparation method of the non-metallocene catalyst, and the non-metallocene catalyst comprises the following formula I structure: wherein R1 and R2 are selected from hydrogen and a hydrocarbon group with 1-10 carbon atoms, R1 and R2 are the same or different, R3 is selected from hydrogen and a hydrocarbon group with 1-10 carbon atoms, R4 is selected from a methyl group, an ethyl group and a n-propyl group, and Ar is a phenyl group, a naphthyl group, a phenyl group substituted with an aliphatic hydrocarbon group or a naphthyl group substituted with an aliphatic hydrocarbon group. The non-metallocene catalyst of the application has a bridged pyridyl amine hafnium structure, is used for catalyzing synthesis of polybutene-1, has high catalytic activity, high monomer conversion rate, and the prepared polybutene-1 has high stereoregularity and narrow distribution.

This invention relates to the field of subframes and discloses a novel hollow cast aluminum rear subframe. The subframe is integrally cast and includes a frame portion and a reinforcing beam portion. The frame portion is a hollow quadrilateral tubular structure, including a front crossbeam, a rear crossbeam, a left longitudinal beam, and a right longitudinal beam. The reinforcing beam includes a solid beam in the middle and connecting portions integrally formed with the longitudinal beams at both ends. A through first mounting hole is provided in the middle of the connecting portion, and a first fixing hole is provided on the side wall of the first mounting hole. Mounting structures are provided at the four corners on the upper side of the frame portion, and lower mounting structures are provided at the four corners on the lower side of the frame portion. Both the upper and lower mounting structures are integrally cast with the subframe. This subframe has the advantages of light weight, high strength, fewer parts, and high flatness.

The utility model discloses an automatic roll device relates to the automatic roll technology field of food factory, it includes belt conveyor, and the at least one side of belt conveyor is installed with support frame, and the support frame is located the side with the connection shaft that is connected with above belt conveyor, and the chain net of the long strip shape is connected with one side of connection shaft, and the chain net of near connection shaft one side top is provided with a plurality of front counterweight round steel, and the front counterweight round steel one side interval is provided with rear counterweight round steel, and the belt conveyor is placed with the surface cake, and the surface cake is sent forward in the process, under the gravity effect of through chain net and front counterweight round steel and rear counterweight round steel, will the surface cake roll up. The utility model effectively solved the defect in the present manual technique, greatly improved the production efficiency, and the roll cake structure is simple, and the operation is stable and reliable, and the failure rate is low, and the degree of automation is high, and the price is low.

The application provides a temperature sensor for energy storage battery which is suitable for high temperature and salt conditions, comprising an inner shell, an outer shell, a temperature sensor and two outer leads. The hardness and insulation of the inner shell are higher than those of the outer shell. The temperature sensor for energy storage battery which is suitable for high temperature and salt conditions further comprises a first filling glue and a second filling glue, and the flexibility and stress buffering capacity of the second filling glue are higher than those of the first filling glue. The composite structure of 'rigidity and flexibility' is adopted, that is, the inner shell with high hardness and high insulation forms an internal support and insulation core with the first filling glue to protect the internal structure, and the second filling glue with higher flexibility and stress buffering capacity serves as an intermediate layer to absorb and dissipate mechanical stress and thermal stress from the outer shell, thereby reducing the impact on the internal core. In addition, the outer shell with toughness provides mechanical protection to withstand torsion, impact and external pressure and protect the fragile inner shell and its internal structure.

The invention provides a dual-mode collector based on radio frequency communication and carrier communication, which comprises a micro-control unit, an RS485 interface communication circuit, a wireless radio frequency circuit, a high-speed power line carrier communication circuit, an AC-to-DC module and a power supply processing module which are connected according to a preset link to form a complete collection and transmission system, the collector collects metering data and state information of an electric energy meter through the RS485 interface communication circuit, after the metering data and the state information are processed by the micro-control unit to generate a to-be-transmitted data packet, the to-be-transmitted data packet is transmitted to a concentrator through the high-speed power line carrier communication circuit or the wireless radio frequency circuit, and the problem that an existing single-mode collector is single in communication mode is solved by adopting a dual-mode communication architecture. The system can adapt to different installation scenes, provides a redundant transmission path to avoid transmission interruption caused by a single-path fault, facilitates later maintenance and upgrading through a modular architecture, remarkably improves the adaptability and reliability of data transmission and the fault-tolerant capability of the system, and meets the data collection and transmission requirements of an intelligent power grid.

This utility model discloses an air supply system, which includes a main pipe and at least two sets of air supply units. Each air supply unit includes an air compressor and a dryer. A first branch pipe is provided connecting the air compressor and the dryer, and a second branch pipe is connected in parallel with the first branch pipe. The main pipe is sequentially connected to the air supply units. When one air compressor or dryer fails, the equipment in other air supply units can continue to work. If the air compressor of one air supply unit fails, the air compressors of other air supply units can continue to supply air to the dryer of that air supply unit through the main pipe. This avoids the entire system from shutting down due to a single equipment failure, reduces downtime caused by equipment maintenance or failure, improves the overall operating efficiency of the system, avoids the situation of some equipment operating under overload for a long time in the traditional one-to-one single-pipe mode, and improves the output quality of compressed air.

This utility model discloses a combined proximity switch mounting bracket, including: a support column, a proximity switch, and a mounting structure; the mounting structure is mounted on the support column, and the proximity switch is mounted on the mounting structure; the mounting structure includes: a fixing component, a rotating component, and a locking component; the fixing component is mounted on the support column, the rotating component is mounted on the fixing component, and the locking component is mounted on the rotating component; this utility model relates to the field of spray painting machine technology and has the following beneficial effects: the new structure is reasonably designed, easy to adjust, has a rotating function, is easy to install, and improves the different requirements of installation, debugging, and equipment use.

This utility model relates to the field of pickling technology, and provides a pickling device for the production and processing of highway guardrail panels. The device includes a fixed base plate, a sliding groove fixedly connected to the top of the fixed base plate, a lifting device on the inner side of the sliding groove, an immersion tank fixedly connected to the top of the fixed base plate, and a spraying device on the side of the immersion tank. A stirring device is also provided on the side of the immersion tank, and the stirring device includes a transmission plate. A transmission column is rotatably connected through and to the side of the transmission plate. A bevel gear is fixedly connected to one end of the transmission column, and a bevel gear is fixedly connected to the end of the dual-output shaft motor away from the water pump. This technical solution solves the technical problems of uneven pickling and low efficiency in existing pickling equipment for the production and processing of highway guardrail panels.

The utility model relates to the technical field of sensor copper sleeve locking installation, and discloses a sensor copper sleeve locking tool which comprises a base, an assembling seat is arranged on the base, a placing opening used for placing a copper sleeve is formed in the assembling seat, and a check block is arranged on one side of the placing opening; the side plate is horizontally arranged on the side edge of the base, a positioning seat is arranged on the side plate, and a sliding sleeve is installed on the positioning seat; the linkage seat is arranged on the side plate, a pressing handle is connected to the front end of the linkage seat, a pressing rod is connected to the tail end of the linkage seat, and a pressing rod tailstock is fixed to the tail end of the pressing rod; a push rod is connected to the pressing rod tailstock, a push rod base is arranged on the side plate, and the push rod slides along the push rod base. The complex part matching and adjusting process of a traditional tool is simplified, and the operation difficulty and the time cost are reduced. In the tool operation process, the positions of the assemblies do not need to be adjusted frequently, errors in the assembly process are reduced, the assembly time is effectively shortened, and the cost is reduced.