34results about How to "High applicable value" patented technology

The invention provides a lithium iron phosphate battery modeling and SOC estimating method in account of capacity loss. The method is provided based on the facts that the working state of the existing lithium iron phosphate battery is influenced by many factors of temperature, current, cycle times, depth of discharge and the like, and thus the modeling process is very complicated. According to the method, based on the Thevenin equivalent circuit, the modeling work is conducted on the lithium iron phosphate battery; the model open-circuit voltage, resistance and capacitance value identification method are given; and the capacity loss of the lithium iron phosphate battery in the life cycle is taken into account; a capacity estimation mathematical model is established; the output precision of a lithium iron phosphate battery model is improved; and the lithium iron phosphate battery SOC estimating problem brought by uncertainty noise is solved with extended Kalman filtering (EKF) algorithm. The method has the advantages of being simple, scientific and reasonable, high in application value, good in effect and the like.

The invention provides a cross-media intelligence target element association analysis system and an association analysis method thereof. The invention can remarkably improve the analysis ability of the target object and the application value of the analysis result to the user. The invention is realized by the following technical scheme: the user interactive operation module selects a decision treemodel corresponding to the purpose of information analysis, a goal-centered model of target elements is established, the user requirement information is sent into an association expansion processingmodule, Reads the target element model of the initial retrieval intelligence set according to the index, obtains the structured data of the attribute items of the intelligence data input into the database module, uses the domain prior knowledge and element expansion rules provided by the external data support module to carry out element expansion, and obtains the new extended target element and element expansion intelligence; Retrieves all the information, and outputs the correlation results of the target events to the support service module, and outputs the target analysis results including the target correlation and the target activity law.

The invention discloses a preparation method of a molecular sieve catalyst. The preparation method comprises the following steps: obtaining a ZSM-5 seed crystal gel solution; adding a mixture I containing a silicon source, an aluminum source, an alkali and water into the ZSM-5 seed crystal gel solution to obtain a mixture, and aging the mixture to obtain a solid gel; carrying out water steam-assisted crystallization, calcination, ammonium ion exchange and calcination on the solid gel under a sealed condition to obtain a nano-ZSM-5 molecular sieve; and carrying out water steam treatment and phosphorus modification on the obtained nano-ZSM-5 molecular sieve, and performing calcination to obtain the molecular sieve catalyst. The catalyst has the characteristics of uniform distribution of acid sites, and high crystallinity, and the preparation method has the advantages of less generated wastewater, and convenience in large-scale production; and the catalyst has the advantages of good hydrothermal stability in an alkylation reaction of ethanol and benzene, keeping high ethyl selectivity under a low benzene-alcohol ratio feeding condition, low content of xylene impurities in the product, and good industrial application prospect.

The invention discloses a method for preparing an intercalated montmorillonite composite inorganic matter from nano calcium carbonate. The method comprises the following steps: (1) carrying out organic intercalation, namely taking proper montmorillonite to be prepared into 15-25% of suspension liquid by deionized water, controlling the temperature at 30-50 DG C, ultrasonically agitating for 1-2 hours, adding a certain amount of an organic intercalation agent cetyl trimethyl ammonium bromide, heating to 70-80 DEG C, and further ultrasonically agitating for 2-4 hours, so as to obtain a stable suspension system; (2) carrying out nano calcium carbonate intercalation, adding a certain amount of CaC12 solution to the stable suspension liquid obtained in the step (1) at a constant speed, agitating, and controlling the temperature at 30-50 DEG C and the adding time at 4 hours, simultaneously introducing a CO2 gas for 4-8 hours at the flow of 1L / h, ageing for 12 hours, centrifuging and filtering to obtain a filter cake; (3) roasting, putting the filter cake into a muffle furnace with the CO2 gas to roast after crushing, wherein the roasting temperature is 180-250 DEG C, and the roasting time is 2-4 hours, cooling and discharging, and grinding agate, so as to obtain the intercalated montmorillonite composite material of the nano calcium carbonate.

The invention provides a medical image processing method based on corner detection, comprising: 1, preprocessing the medical image; 2, extracting the Harris corner; 3, calculating the scale normalization operator, detecting whether each point reaches the maximum at a certain scale response value, and obtaining the extracted corner matrix; 4, drawing the obtained points in the image after obtainingthe corner matrix of the image, and passing the corner matrix is to the clustering algorithm for clustering; and 5, giving a K value, performing clustering according to the Kmeans algorithm, using the similarity matrix as a discrimination function, and performing no more merging if the similarity is lower than the class of the threshold. The invention has superiority and great applicability in terms of effect and processing efficiency, or in practical application.

The invention discloses a magnetic push suspension bearing unit, comprising a shaft, an inner magnetic ring, an outer magnetic ring, an auxiliary bearing, a limiting block and a bracket, wherein the inner magnetic ring is arranged at the near end part of the shaft; the corresponding outer magnetic ring is arranged on the bracket; the adjacent surfaces of the two magnetic rings are the same in polarity; an inner magnetic barrel for magnetizing in a radial manner is arranged on the shaft; the inner magnetic barrel is sleeved with an outer magnetic barrel for magnetizing in the radial manner, and the outer magnetic barrel is fixedly arranged on the bracket; the adjacent surfaces of the two magnetic barrels are the same in polarity; the auxiliary bearing is also arranged between the shaft and the bracket; corresponding limiting block and limiting ball are arranged at the end of the shaft; a direct contact rolling body is not formed between the shaft and the bracket; the shaft and the bracket form a suspension state by virtue of a magnetic push shaft; the shaft and the bracket are free of friction, free of abrasion, high in transmission efficiency, free of cooling and lubricating, and long in service life, and the magnetic push suspension bearing unit has high applicable value in high-speed fields of aerospace and the like.

The invention discloses a finger vein image segmentation method based on directional valley detection, a system thereof and a terminal. The method comprises the following steps: 1, a finger vein imageacquired by an image acquisition module is received; 2, ridgelet transformation is carried out on an intercepted finger vein image and image enhancement processing is carried out; 3, a valley area isextracted for the vein image after enhancement processing; 4, the obtained vein image is divided to three areas: a background area, a confusion area and a foreground area, and three times of threshold segmentation processing are carried out on the three areas; and 5, the obtained segmented image is subjected to edge detection, and a segmented image after processing is outputted. According to thesystem and the method of the invention, an algorithm is put forward according to some intrinsic information contained in vein images such as the shape, the step property and the direction, the vein features of interest in the image can be accurately extracted, and extracted error features can be reduced.

The invention discloses a concrete creep prediction method considering damage influence. The method comprises the following steps: taking the residual quadratic sum of a creep test value and a creep calculation value as a target function, inverting parameters in the creep degree formula, constructing a general creep degree formula, determining a damage variable, constructing a concrete creep prediction model based on the general creep degree formula and the damage variable, and completing prediction of the concrete creep process by adopting the constructed concrete creep prediction model. According to the concrete creep prediction method, influence of damage such as cracks on the creep deformation development process is comprehensively considered; the method has high fitting precision, anerror between a creep deformation result of the concrete obtained through the method and the actual deformation result of the concrete is small, powerful theoretical support can be provided for designof a concrete structure and durability and safety evaluation of the concrete structure, and the application value is high.

The invention discloses a tunnel secondary lining arch frame unit, an arch frame structure constituted by the same and an erection method of the arch frame structure. The tunnel secondary lining arch frame unit comprises at least three arch frame unit main ribs with the same length, the exteriors of all arc frame unit frames are fixedly connected into an arc frame unit framework through a plurality of stirrups, and the two ends of the arc frame unit framework are each fixedly connected with a piece of connection angle steel. The arch frame structure comprises a plurality of tunnel secondary lining arch frame units, all the tunnel secondary lining arch frame units are connected into an arc-shaped arch frame in sequence through bolts and nuts; the outer side of the arc-shaped arch frame is fixedly connected with outer layer of circumferential main ribs in a welded mode, and the inner side of the arc-shaped arch frame is fixedly connected with inner layer of circumferential main ribs in a welded mode; and a plurality of arch-shaped arc frames are arranged side by side in parallel at intervals to from an arch frame assembly. According to the tunnel secondary lining arch frame unit, the position of a double-layer reinforcing rib net of a tunnel secondary lining can be accurately positioned, and it is ensured that the concrete protection layer thickness of double layers of reinforcing ribs meets the design requirement, and meanwhile, the phenomenon that a waterproof plate is punctured can be effectively avoided.

The invention discloses a method for preparing optical pure milnacipran and medicinally acceptable salt, which adopts racemic milnacipran as raw material, tartaric acid derivative and composition as resolution agent to resolve.

The invention discloses a wireless bridge radio frequency intensity adjusting system with stable signals. The method comprises the following operation steps that operation steps are included; The method comprises the steps of step 1, a tester fixes a directional antenna A on the top of a building; then, a camera is mounted and debugged on the directional antenna A; In the installation process of the outdoor wireless network bridge A, a tester needs to ensure that no obstacle is blocked in a transmission line of the outdoor wireless network bridge A as much as possible, the transmission condition that the two ends are mutually visible is met, and wireless signals are weakened and blocked due to obstacles such as trees, buildings and large-scale steel bar buildings. In order to improve the wireless transmission performance, the condition of weak signals caused by signal damage is prevented; And step 2, the debugging camera is connectedwith a switch through a network cable by a person, and connected with the switch with the outdoor wireless network bridge A through the network cable. The wireless bridge radio frequency intensity adjusting system with stable signals is simple in configuration equipment, easy to operate and suitable for popularization.

The invention discloses a silk composite fabric production method, and belongs to the technical field of production of fabrics. The silk composite fabric production method comprises: blending bamboo fiber and ramie fiber to prepare mixed yarn, carrying out softening treatment; wrapping with silk and spandex filament to prepare a silk-spandex coated silk; weaving by using the mixed yarn as weft andusing the silk-spandex coated silk as warp to form a composite billet silk; carrying out impurity removing on the composite billet silk through a refining process; carrying out water washing, soaking, and introducing menthol molecules; and carrying out dyeing and other re-processing processes to obtain the silk composite fabric. According to the present invention, the prepared silk composite fabric has excellent characteristics of moisture absorption, gas permeation, coolness and refreshing, and is particularly used as the summer fabric, and further has advantages of good anti-mold property,good wear resistance, good elasticity, good elastic recovery and good wrinkle resistance, such that the fabric has the complete performances; and the soaking device used by the method has advantages of simple and flexible structure, simple application and good implementation effect.

A universal operating device for an overdrive gearbox and a use method thereof, including a gearbox gear selecting and shifting shaft, and a gear selecting and shifting rocker arm and a gear selecting and shifting block which are arranged on the gearbox gear selecting and shifting shaft, where one end of the gearbox gear selecting and shifting shaft is separately in transmission fit with a gear selecting flexible shaft and a gear shifting flexible shaft through the gear selecting and shifting rocker arm, and the other end of the gearbox gear selecting and shifting shaft is in transmission fit with a gear shifting guide block through the gear selecting and shifting block; the gear selecting flexible shaft is in transmission fit with the gear selecting and shifting rocker arm through an overdrive gear switching device; and the overdrive gear switching device includes a gear shifting fork, the upper end of the gear shifting fork is in transmission fit with the upper end of the gear selecting and shifting rocker arm, and the lower end of the gear shifting fork is in transmission fit with the lower end of the gear selecting and shifting rocker arm. In use, the transmission direction of the gear selecting and shifting shaft is changed by utilizing the translation of the rocker arm without changing an inner structure of the gearbox. Therefore, the design is simple in structure and low in manufacture cost, and can realize gear order reverse shifting of the gearbox without changing the inner structure of the gearbox.

The invention provides a molten slag surface tension prediction method based on melt structure analysis. The molten slag surface tension prediction method comprises the steps of: S1, obtaining the oxygen bond type and the oxygen bond mole fraction of to-be-detected molten slag; and S2, inputting the oxygen bond type and the oxygen bond mole fraction into a pre-trained molten slag surface tension prediction model, and solving the molten slag surface tension prediction model to obtain a predicted value of the surface tension of the to-be-detected molten slag, wherein the molten slag surface tension prediction model comprises a molten slag surface tension prediction equation constructed by considering the formation mechanism of the surface tension of the oxide melt and combining the oxygen bond type and the oxygen bond molar fraction of the molten slag according to thermodynamic equilibrium and the Gibbs free energy theory. The prediction precision and stability of the slag surface tension are improved.

The invention discloses an agricultural soil moisture retardant. The agricultural soil moisture retardant comprises the following materials in percent by mass: 3-7% of polycaprolactone, 1-3% of polylactic acid, 50-55% of gamma-polyglutamic acid, 30-35% of quartz sand, 3-7% of chloro palm-oil methyl ester and 2-4% of glycerinum, and the sum of the mass percents of all the components is 100%. The invention also discloses a preparation method of the moisture retardant. The preparation method comprises the following specific steps of: weighing the raw materials according to the mass percent, uniformly mixing the raw materials, then extruding and granulating to obtain the moisture retardant. The agricultural soil moisture retardant disclosed by the invention is a biodegradable material, and canbe degraded by microorganisms in cultivated soil; in addition, the moisture in agricultural soil can be effectively prevented from permeating into an uncultivated layer, rainfall in a non-fertile phase can be stored, the soil infiltration can be improved, the runoff generation can be reduced, the soil moisture content can be improved and the water and soil loss and the soil impoverishment can beeffectively prevented.

The invention discloses a loading transmission type semi-rigid base asphalt pavement structure. The loading transmission type semi-rigid base asphalt pavement structure is composed of an asphalt surface layer, a semi-rigid base, a rigidity transition layer and a roadbed, the asphalt surface layer is arranged on the semi-rigid base, and the semi-rigid base is arranged on the rigidity transition layer; the rigidity transition layer is arranged on the roadbed, the asphalt surface layer is composed of upper, middle and lower surface layer parts, and the upper and middle surface layer parts are arranged on the lower surface layer part; a traditional bearing type semi-rigid base asphalt pavement structure is converted into the loading transmission type semi-rigid base asphalt pavement structure,and the service life of the semi-rigid base and the asphalt surface layer is further prolonged. According to the loading transmission type semi-rigid base asphalt pavement structure, the durability of an asphalt pavement is significantly improved, the whole life cycle cost is effectively reduced, and the standard and service level of road construction are improved.

The invention relates to a fully automatic precision assembly equipment for keyboard keycaps. The fully automatic precision assembly equipment includes a frame, the frame is divided into top, middle and bottom, and the industrial control system, electrical control system and air circuit They are respectively arranged at the bottom of the frame, and the mobile single-axis mechanism is arranged at the top of the frame. The middle part of the frame is respectively placed with a loading and unloading mechanism, a visual inspection mechanism, a keycap suction and transportation mechanism, and a keycap positioning mechanism according to the front and rear of the equipment. Mechanism, keycap protective film collection box, PCB feeding conveyor mechanism, PCB scanning gun rack, keycap assembly pressure head mechanism, PCB suction and handling mechanism and assembly platform components. To solve a series of production problems such as large consumption of human resources and high production costs, the current equipment technology has a good application prospect, and has high applicable value in the field of keycap production, and is worth promoting.

The invention relates to a dynamic loading realization method in the radar signal processing, a core idea is that the storage space of the filter coefficient is divided into 2<n> parts (n is equal to 1, 2, 3). When the first part operation is proceeded, at the same time the reading and writing of the next part coefficient is also proceeded, and when the first part operation is done, the second part coefficient is fully wrote, the second part operation is continued to proceed, and at the same time of the second part operation, new coefficient is continued to write to cover the accomplished operation coefficient space, which is alternately proceeded in sequence. The invention is mainly applicable to the filter processing of the radar signal processing, the filter coefficient can be timely adjusted according to the change of the external environment, the bad real-time performance of the radar signal processing system is solved when the external environment is changed.

The invention discloses a production method of a silk composite fabric, which belongs to the technical field of fabric production technology, and comprises the following steps: firstly blending bamboo fiber and ramie fiber to make a mixed yarn, and performing softening treatment; wrapping silk and spandex filament to produce Silk-spandex covered silk; then the mixed yarn is used as the weft, and the silk-spandex covered silk is used as the warp to weave composite gray silk; then the composite gray silk is removed by refining process; soaked after washing, menthol molecules are introduced; Finally, through reprocessing such as dyeing, the silk composite fabric is obtained. The silk composite fabric prepared by the invention has excellent characteristics in terms of moisture absorption, breathability, coolness and comfort, and is especially suitable for use as a summer fabric; at the same time, the fabric has good mold resistance, elasticity, elastic recovery and wrinkle resistance , making the fabric performance more comprehensive. In addition, the soaking device adopted in the method has a simple and flexible structure, is easy to apply, and has a good implementation effect.

The invention relates to the field of mold steel machining equipment, in particular to a milling fixture for mold steel. The milling fixture for the mold steel is provided with a pedestal used for containing the mold steel, a milling fixture body capable of adjusting the milling angle is installed on the pedestal surface of the pedestal, the milling fixture body is provided with a magnetic fixturebody used for clamping the mold steel, the front side of the magnetic fixture body directly faces a milling machine, an electromagnet is installed on the back side of the magnetic fixture body, one end of the bottom of the magnetic fixture body is movably hinged to the pedestal, and the other end of the bottom of the magnetic fixture body is connected with a lifting air cylinder used for adjusting the inclination angle of the magnetic fixture body. According to the milling fixture for the mold steel, the applicability is good, the milling fixture can well adapt to the mold steel with the large size or length and the irregular surface, the labor cost and the equipment cost are greatly reduced, and the good application prospect is achieved.

The invention discloses a raw material screening device for traditional Chinese medicine processing with adjustment function. A water inlet pipe is fixedly connected to the left side of the water tank, and a cleaning pipe is fixedly connected to the inner wall of the bottom of the shunt pipe. The raw material screening device for traditional Chinese medicine processing with adjustment function, when adjusting the size of the sieve plate, replace the bottom sieve plate according to the required screening size, unscrew the fixing nut outside the fixed column, and then turn the side of the bottom sieve plate The movable clip strips are removed from the outside of the fixed column, and then the bottom sieve plate is taken out from the inside of the bottom sieve frame, and then the required sieve plate is installed, which facilitates the adjustment of the size of the screen and avoids the fact that the sieve device can only The situation of screening raw materials of one specification further improves the applicability of the screening device and increases the applicable value of the screening device.

The invention relates to the field of tape transportation, and discloses a tape coil positioning and parking method. The tape coil positioning and parking method comprises the following steps of installing a photoelectric proximity switch behind a predetermined parking overhaul point of a tape, enabling an emission head of the photoelectric proximity switch to be aligned with the tape, and measuring the distance from a point emitted to the tape by the photoelectric proximity switch to the predetermined parking overhaul point of the tape; when a faulty coil is overhauled, pasting reflective stickers on the tape corresponding to the faulty coil, and then starting the tape to move; and when a plc receives information sent by the photoelectric proximity switch and concludes that the faulty coil has moved to an emission point of the photoelectric proximity switch on the tape, calculating the time that the tape moves to the predetermined parking overhaul point of the tape according to the moving speed of the tape and the distance from the point emitted to the tape by the photoelectric proximity switch to the predetermined parking overhaul point of the tape, and controlling the tape to stop by the plc when reaching the time.

The present invention provides a method for predicting the surface tension of molten slag based on melt structure analysis, comprising: S1, obtaining the oxygen bond type and oxygen bond mole fraction of the molten slag to be tested; S2, inputting the oxygen bond type and oxygen bond mole fraction in advance The trained slag surface tension prediction model, and solve the slag surface tension prediction model to obtain the predicted value of the slag surface tension to be measured; the slag surface tension prediction model includes the thermodynamic balance and Gibbs free energy theory, considering The formation mechanism of the surface tension of oxide melt, and the prediction equation of the surface tension of slag constructed by combining the oxygen bond type and the oxygen bond mole fraction of the slag. Improve the prediction accuracy and stability of slag surface tension.

The application discloses a preparation method of a molecular sieve catalyst, comprising: obtaining a ZSM-5 seed crystal gel solution; adding a mixture I containing silicon source, aluminum source, alkali and water to the ZSM-5 seed crystal gel In the solution, the mixture is obtained, aged, and a solid gel is obtained; under sealed conditions, the solid gel is steam-assisted crystallized, roasted, ammonium ion exchanged, and roasted to obtain a nano ZSM-5 molecular sieve; the obtained nano The ZSM‑5 molecular sieve is treated with steam, modified with phosphorus, and calcined to obtain the molecular sieve catalyst. The catalyst of the present application has the characteristics of uniform acid site distribution and high crystallinity, and the preparation process produces less waste water, which is convenient for scale-up production; the catalyst has good hydrothermal stability in the alkylation reaction of ethanol and benzene, and can be used at a lower benzene-alcohol ratio The high ethyl selectivity can still be maintained under the feed conditions, and the xylene impurity content in the product is low, so it has good industrial application prospect.

The invention provides a lithium iron phosphate battery modeling and SOC estimating method in account of capacity loss. The method is provided based on the facts that the working state of the existing lithium iron phosphate battery is influenced by many factors of temperature, current, cycle times, depth of discharge and the like, and thus the modeling process is very complicated. According to the method, based on the Thevenin equivalent circuit, the modeling work is conducted on the lithium iron phosphate battery; the model open-circuit voltage, resistance and capacitance value identification method are given; and the capacity loss of the lithium iron phosphate battery in the life cycle is taken into account; a capacity estimation mathematical model is established; the output precision of a lithium iron phosphate battery model is improved; and the lithium iron phosphate battery SOC estimating problem brought by uncertainty noise is solved with extended Kalman filtering (EKF) algorithm. The method has the advantages of being simple, scientific and reasonable, high in application value, good in effect and the like.

The invention provides a method for rapidly analyzing the quality of commercial zein products, belonging to the field of a product quality analysis method. A more comprehensive method for reflecting the quality of the products is established by analyzing the water content, the protein content, the crude fat content, the ash content, the pigment content, the protein denaturation and the like of the zein; the method has higher applicable value for guiding the quality control of a zein production enterprise and provides reference for the relevant theoretical research of the zein.

The invention discloses an online course learning evaluation method based on eye movement information. First, the course content is divided into unit modules, knowledge points and related resources in turn, and secondly, the degree of attention of the student unit modules is calculated to determine the degree of attention of learning each unit. Whether it is within the threshold range, and then calculate the students' attention to these unit knowledge points, judge whether the students' attention to learning knowledge points is within the threshold range, analyze the students' attention to these knowledge points' learning resources again, and judge the students' learning resources on the knowledge points Whether you are interested or not; Finally, compare the test scores and unit module attention, analyze the effect and quality of students' online learning, and then put forward optimization suggestions for the design of course unit modules. The present invention expands the current evaluation method for online course learning, uses eye movement information as the quantitative basis for evaluating the quality of students' online learning, breaks through the traditional evaluation system mode, and provides guidance for improving students' online learning efficiency.

The invention discloses a tunnel secondary lining arch unit and its formed arch structure and erection method. The tunnel secondary lining arch unit includes at least three main ribs of the arch unit with the same length. The arch unit skeleton is fixedly connected by several stirrups, and the two ends of the arch unit skeleton are fixedly connected with connecting angle steel; the arch structure includes several tunnel secondary lining arch units, and all tunnel secondary lining arch units The arc-shaped arch frame is connected by bolts and nuts in sequence; the outer side of the arc-shaped arch frame is welded and fixedly connected with the outer layer of the main reinforcement, and the inner side of the arc-shaped arch frame is welded and fixedly connected with the inner layer of the main rib. The arch frames are spaced in parallel and arranged side by side to form an arch assembly. The invention can accurately locate the position of the secondary lining double-layer reinforcement mesh, ensure that the thickness of the concrete protective layer of the double-layer reinforcement meets the design requirement, and can effectively avoid the phenomenon that the waterproof board is punctured at the same time.

The invention discloses a prestressed concrete cylinder pipe capable of monitoring strain in real time, which comprises pipe core inner layer concrete, a steel cylinder, pipe core outer layer concrete, a prestressed steel wire and a mortar protective layer which are sequentially wrapped from inside to outside, and a glass fiber composite base optical cable is arranged on the pipe core inner layer concrete; a carbon fiber composite-based optical cable is arranged on the steel cylinder; a high-transmission tightly-wrapped sheath strain sensing optical cable is arranged on the outer layer concrete of the pipe core, bare optical fibers are arranged on the prestressed steel wire, and the glass fiber composite base optical cable is arranged on the mortar protection layer. The invention further relates to a manufacturing method of the prestressed concrete cylinder pipe capable of monitoring the strain in real time, the distributed optical fiber sensors are implanted in the PCCP manufacturing process, the problem of long-distance distributed monitoring of the strain of an existing PCCP pipeline is solved, and technical support can be provided for safety evaluation of the operation stage of the prestressed concrete cylinder pipe. And the application value is high.

The invention discloses modular furniture, comprising a plurality of rectangular composition boards which are combined in a splicing way, and a plurality of right-angle connecting pieces used for splicing connection, wherein the upper parts and the lower parts of the four sides of each composition board are respectively a 45-degree oblique side, a transitional straight side is formed between each upper oblique side and the corresponding lower oblique side, and spliced eyes leading to the interiors of the composition boards are respectively formed in the upper oblique sides and the lower oblique sides; each right-angle connecting piece is provided with two splicing plates which are vertical to each other, and the splicing plates are matched with the spliced eyes. The modular furniture further comprises a plurality of splicing feet, each splicing foot comprises a connecting foot and a ground foot which is rotatably connected with the connecting foot in a lifting way, and connecting foot holes matched with the splicing plates are formed in the connecting feet. The modular furniture also comprises a plurality of connecting strips and a plurality of linear connecting pieces. The modular furniture also comprises a plurality of rectangular partition boards arranged in the furniture, and a splicing groove is formed in the middle of each partition board. According to the modular furniture, the composition boards can be directly packaged and transported, and then are assembled in a using place; the composition boards can be assembled into a plurality of modular furniture grids, thus being more convenient to transport and assemble; therefore, the modular furniture is lower in transportation cost, simpler in structure and easier in assembly.