55results about How to "Has commercial value" patented technology

The present invention relates to compound electrode slices applied in lithium ion battery and producing method thereof, which belongs to fields of battery production, in order to provide a new septum and cathode two-in-one electrode slices. The provided compound electrode slices is polymer colloid latex initiated, grafted and copolymerized by 1-5 portion initiator in aqueous solution containing 100 portion water-solubility polymer by 30-500 portion hydrophobic monomer and 0-200 portion hydrophilic monomer. Counted as that the solid content in the polymer colloid latex is 100%, the inorganic filler of 0-100% and the plasticizer of 20-100% are added, and the slurry is coated on the carbon cathode slice which is obtained by drying. The electrode slices has good heat stability and electrochemistry stability, super water absorptivity and rapid water absorption speed, and keeps higher water absorptivity in whole circle service life period. The battery has credible safety and circle service life, and the present invention provides a new thinking for lithium ion battery fields.

The invention relates to an entrance guard with a good recognition effect and based on a face recognition technology. The entrance guard comprises a main body and a gate, and further comprises an adjusting mechanism and a sweeping mechanism; the adjusting mechanism comprises a moving assembly, a lifting assembly and a swinging assembly; and the sweeping mechanism comprises a reciprocating assemblyand a sweeping assembly. In the entrance guard with the good recognition effect and based on the face recognition technology, the face collecting range is expanded through the adjusting mechanism, sothat the recognition effect is better, the precision of face recognition is improved, the situations of leakage scanning and missing scanning are prevented, thus the phenomena of fare evasion and ticket leaking are avoided, and a camera can be stored in the main body to realize a protecting effect; and through the sweeping mechanism, the camera can be kept clean before and after being used, the sharpness of faces collected by the camera is improved, thus the face recognition effect is improved, the entrance guard working efficiency is improved, and the availability and reliability of the entrance guard are improved accordingly.

The invention discloses a method for performing surface modification on a reinforcing fiber by using a crystalline polyaryletherketone sizing agent, and belongs to the technical field of reinforcing fiber surface treatment. A soluble polyaryletherketone precursor is configured as a solution, an interface reinforcing filler is added under the ultrasonic oscillation condition to prepare the solublepolyaryletherketone sizing agent, and the soluble polyaryletherketone sizing agent is placed in a sizing tank; after the sizing agent is used for sizing the reinforcing fiber, a solvent is dried by evaporation to enable the soluble polyarylether precursor to be uniformly adhered to the surface of the reinforcing fiber, and then the precursor on the surface of the reinforcing fiber generates a hydrolysis reaction under the acidic condition and is converted into polyaryletherketone with the crystallinity, the heat resistance and the insolubility in the organic solvent; and finally, water is evaporated to obtain the reinforcing fiber modified by the crystalline polyaryletherketone sizing agent. When the modified reinforcing fiber is used for reinforcing PEEK resin, the interfacial shear strength (IFSS) of a composite material is remarkably improved (267%) compared with an unsized carbon fiber, and the modified reinforcing fiber is solvent-resistant and can be used at the high temperature.

The invention discloses a few-layer MoS2 uniform modified multi-stage structure TiO2 photocatalyst and a preparation method thereof. The preparation method comprises the steps of 1. synthesizing a hexagonal phase thick layer MoS2; 2. preparing a stable few-layer MoS2 solution by a lithium insertion method; and 3. directly mixing the obtained stable MoS2 solution with an aqueous solution containing a certain amount of ammonium fluorotitanate and glucose, adjusting the pH value of the mixture, and performing heating, roasting and sulfuration to obtain the prepared catalyst. Compared with the prior art, the few-layer MoS2 uniform modified multi-stage structure TiO2 photocatalyst has the advantages and outstanding effects of the used chemical reagents are commonly used reagents, low in cost and readily available; the test shows that the hydrogen preparation activity of photocatalysis decomposed water is quite high; under 365nm ultraviolet irradiation, the hydrogen yield can reach 2.5mmol h<-1>g<-1>.

The invention relates to an amorphous hollow carbon nanotube and a preparation method thereof. The amorphous hollow carbon nanotube has an inner diameter of 50 to 100 nm, a thickness of 10 to 20 nm and a tube length of 1 to 5 [mu]m; the carbon wall of the amorphous hollow carbon nanotube is of a porous amorphous structure; and a plurality of nanoparticles are attached to the inner wall of the amorphous hollow carbon nanotube. The amorphous hollow carbon nanotube is obtained by using zinc oxide as a template and phenolic aldehyde amine resin as a carbon source through low-temperature heat treatment and hydrochloric acid etching. According to the invention, the lithium / sodium affinity of metal nanoparticles is utilized to guide lithium / sodium metals; the deposition and stripping processes ofthe lithium / sodium metals are limited in the cavity of a carbon tube; the effects of inhibiting dendritic crystal growth, limiting volume change generated in the deposition and stripping processes ofthe lithium / sodium metals and stabilizing negative electrode / electrolyte interfaces are achieved; and important application values are achieved for constructing stable and highly-efficient lithium / sodium metal batteries.

The invention relates to a method for synthesizing a glassine. The method comprises the following steps: reacting (2R, 3S, 4S)-2, 3, 4-tribenzyloxy glutaraldehyde with acetone to synthesize a key intermediate (E)-(2R, 3S, 4S)-2, 3, 4-tribenzyloxy pentyl-6-acetyl hexane-5-olefine aldehyde, then catalyzing (E)-(2R, 3S, 4S)-2, 3, 4-tribenzyloxy pentyl-6-acetyl hexane-5-olefine aldehyde with Lewis acid to sequentially carry out a nucleophilic addition and a 1, 4-Michael addition reactions, obtaining benzyl-protected Pro-Xylane<TM> 1-((2S, 3S, 4S, 5R)-3, 4, 5-tri(benzyloxy) tetrahydro-2H-pyran-2-yl)propan-2-ol, and finally, carrying out catalytic hydrogenation by using palladium carbon to remove benzyl, so as to obtain Pro-XylaneTM (2S, 3R, 4S, 5R)-2-(2-hydroxypropyl) tetrahydro-2H-pyran-3, 4, 5-triol. The method is high in reaction yield, the obtained product is high in purity, and the method has huge application value.

The invention discloses an onboard advertisement real-time synchronous terminal, an onboard advertisement real-time synchronous system and an onboard advertisement real-time synchronous method, wherein, the onboard advertisement real-time synchronous terminal comprises a display unit, a processing unit, a storage unit, a real-time clock chip and a GPS unit. The display unit is arranged on a vehicle body for people outside the vehicle body to read; the processing unit is used to process data and schedule a control command, is connected with the display unit, and triggers advertisement content displayed by the display unit in the preset time; the storage unit is connected with the processing unit and is used to store the advertisement content; the real-time clock chip is connected with the processing unit and is used to provide a clock signal for the processing unit; and the GPS unit is connected with the processing unit, provides standard time used for timing for the real-time clock chip, and assures the consistency of clock signals in real-time clock chips of different onboard advertisement real-time synchronous terminals.

The invention discloses a method for preparing colon-targeted microcapsules by using a microfluid technology. The method comprises the following steps of S1, dissolving modified chitosan in an acetic acid aqueous solution, regulating the pH value to 7.0, and dissolving a photoinitiator and model protein in the acetic acid aqueous solution to obtain an internal phase solution; S2, dissolving ethyl cellulose in dichloromethane to prepare an intermediate phase solution; S3, dissolving polyvinyl alcohol in pure water to prepare a continuous phase solution; S4, wrapping the internal phase solution obtained in the step S1 in droplets of the intermediate phase solution obtained in the step S2, dispersing the droplets in the continuous phase solution obtained in the step S3, and preparing a W / O / W emulsion in one step; S5, irradiating the emulsion obtained in the step S4 with ultraviolet light to solidify the inner phase into a spherical core, and heating to volatilize the organic solvent completely to solidify the intermediate phase into a capsule shell; and S6, washing the microcapsules cured in the step S5 with pure water for multiple times, and performing freeze drying. The microcapsules prepared by the method has a colon-specific release effect and is used for protein embedding and oral delivery.

The invention discloses a method used for preparing a Paenibacillus polymyxa biological pesticide wettable powder based on liquid fermentation and a formula dosage form. A Paenibacillus polymyxa brothadopted in the method is capable of solving a problem that the spore conversion rate of conventional liquid fermentation is low, and the spore conversion rate of the method is higher than 98%. The obtained Paenibacillus polymyxa broth is composed of active Paenibacillus polymyxa; the stress resistance is excellent; the service life is long; long time storage can be realized; self life is long; the method is suitable for fermentation technology, and industrialized production. The invention also discloses a production method of a Paenibacillus polymyxa concentrate and the Paenibacillus polymyxabiological pesticide wettable powder; the preparation method is simple; spore recovery rate is 98% or higher; a plurality of spore protection technologies are adopted; product self life is prolongedto be 18months or longer; and commercial value is achieved.

The invention discloses a regeneration method of acid washing waste acids, which comprises the following steps: carrying out waste acid early-stage concentration by a triple-effect evaporation technique to evaporate out saturated iron salts from the substance containing hydrofluoric acid, nitric acid and iron salts, replacing the iron salts with sulfuric acid, volatilizing and separating nitric acid and hydrofluoric acid out of the acid mixture by heating assisted by decompression, and condensing the volatilized acid mist and water vapor, thereby obtaining abundant nitric acid and hydrofluoric acid which are used for acid washing.

The invention discloses an enzymolysis preparation method of phosphatidylinositol. The enzymolysis preparation method comprises the following steps of: dissolving pretreated soybean phosphatide in solvent, and adding phospholipase D in the solvent, wherein the addition of the phospholipase D is 50 to 150 units per 100mg the pretreated soybean phosphatide; stirring for 3 to 12 hours at 36 DEG C to 40 DEG C and pH value ranging from 7.0 to 9.0, thus obtaining an enzymolysis product; and performing extraction on the enzymolysis product by virtue of normal hexane, concentrating and drying extraction liquid, washing by virtue of ethanol or ethanol aqueous solution, and drying to obtain the phosphatidylinositol product. The pretreated soybean phosphatide is prepared by the following steps of: dissolving soybean phosphatide in chloroform, settling by virtue of methanol, collecting sediments, repeating the steps for several times, and drying the final obtained sediment to obtain the pretreated soybean phosphatide. The enzymolysis preparation method is simple and relatively low in cost; and the purity of the prepared phosphatidylinositol is high, and thus the phosphatidylinositol can serve as a chromogenic substrate to be applied to a chromogenic medium for quickly detecting LM (listeria monocytogenes).

The invention provides a psychological consultation intelligent robot. The invention relates to the field of the intelligent robot, and particularly to the intelligent robot system which performs psychological consultation, psychological guidance and psychological treatment and a method. The psychological consultation intelligent robot is composed of a waking-up and ending identification system 1,a virtual consultant role system 2, a user interaction system 3, a consultation instruction and consultation time setting system 4, a satisfaction degree and evaluating system 16, a user condition trend determining analysis system 17, a condition mode system 18, a searching system 19, a psychologist manpower assisting system 20, a consultation main system A and a consultation assisting system B.The psychological consultation intelligent robot can improve intelligent experience of the robot and has high psychological consultation professional degree and high user satisfaction degree. Furthermore the method is suitable for commercial use.

The invention provides an internal dust removal type pyrolysis and gasification device and method for organic solid fuel. The device comprises a reacting furnace, ceramic membrane tubes, a burner, a heat exchanging device, a condensing device, a gas storage tank, a reverse blowing pipeline and a temperature control device. One or more sets of the ceramic membrane tubes are fixed at the top end of the reacting furnace, after exhaust gas produced through pyrolysis or gasification or combustion of the organic solid fuel in the reacting furnace penetrates through the ceramic membrane tubes, gas-solid separation is achieved, the gas is exhausted out of the reacting furnace through a produced gas outlet, and small solid particles in the exhaust gas are blocked on the surface layers of the ceramic membrane tubes by the ceramic membrane tubes or fall into an ash hopper. The produced gas is stored in the gas storage tank after being cooled through the heat exchanging device and the condensing device, and the oil obtained through condensation is gathered into an oil gathering bottle. The gas stored in the gas storage tank can serve as the reverse blowing gas of the ceramic membrane tubes and also serve as the combustion-supporting gas for the pyrolysis and the gasification of the organic solid fuel of the reacting furnace. By means of the method, the energy utilization of the pyrolysis and the gasification of the organic solid fuel is further improved, pollution of fly ash to surroundings is reduced, and the effects of energy conservation and emission reduction are achieved.

The invention discloses a method for preventing a coal dust blocking coal bed crack. The method is suitable for high-efficiency mining of a coal bed gas well. The method is characterized in that a dust depressor with the size being 5 m<3> to 10 m<3> and clean water with the size being 90 m<3> to 120 m<3> are evenly mixed to be prepared into mixed liquid, and a water injection pump is used for injecting the mixed liquid into the coal bed crack through a shaft; after the mixed liquid is completely injected, a valve arranged at the upper end of the shaft is closed, after 3 h-6 h, the valve arranged at the upper end of the shaft is opened, and the mixed liquid carrying coal dust is extracted to the ground through a water suction pump; when the mixed liquid extracted by the water suction pump still contains a large amount of coal dust, operation is repeatedly conducted till no coal dust is contained in the extracted mixed liquid; and when the mixed liquid extracted by the water suction pumpdoes not contain the coal dust, the valve is closed, and construction is over. By means of the method, the defect that the crack blocked by the coal dust in a fracturing well coal bed cannot be subjected to dredging and blocking releasing when well cleaning and dredging are conducted through clean water, high-efficiency blocking releasing can be conducted on the blocked coal bed gas well, and thepurpose of recovering or even increasing the gas production rate of the blocked well is achieved.

The invention provides a user type division and conversion method based on a data graph, an information graph and a knowledge graph. The method is characterized in that attribute modeling is performedon a user based on a data graph, an information graph and a knowledge graph. Based on a self-construction theory and a self-decision theory, user types in a virtual brand community are roughly divided, potential users are converted into active teaching material contributors, and the method aims to solve various problems, including autism, network addiction and the like, influenced by the user types.

The invention relates to a method for electrochemically synthesizing a sequence-controllable coordination metal polymer, and belongs to the technical field of polymer synthesis. The technical problemsthat an existing polymer sequence controllable synthesis method is long in consumed time, low in efficiency and prone to side reaction are solved. According to the method for electrochemically synthesizing the sequence-controllable coordination metal polymer, a monomer simultaneously with an electrochemical oxidative coupling reaction unit and an electrochemical reductive coupling reaction unit is synthesized, an electroactive self-assembled single layer is introduced as a template, and the selectivity and the reaction degree are controlled through program conversion of positive and negativepotentials; and therefore, the polymer with controllable composition, sequence and chain length is electrochemically synthesized. Compared with the prior art, the method provided by the invention hasthe advantages of high reaction efficiency and short synthesis period, is beneficial to personalized synthesis of coordination polymers with definite structures and complex structures and functions, and has automatic synthesis potential and commercial value. Such polymers are difficult or impossible to prepare with usual chemical methods.

The invention discloses a fuel cell membrane electrode and a preparation method thereof. The preparation method comprises the following steps: (1) dispersing a platinum-carbon catalyst into nano particles, and depositing the nano particles on a nano carbon material to form a fibrous catalyst, the mass ratio of the platinum-carbon catalyst to the nano carbon material being 1: (0.5-5); (2) dispersing the fibrous catalyst in the step (1) in a mixed system of deionized water and an organic solvent, adding an ionic polymer solution to prepare slurry, and spraying the slurry on two sides of a proton exchange membrane to form a three-dimensional structure catalyst layer for the fuel cell, with one side as an anode catalyst layer and the other side as a cathode catalyst layer. The specific surface area and porosity of the catalyst layer are increased by constructing the three-dimensional structure of the catalyst layer, and the hydrophobic effect of the catalyst layer is adjusted by adopting the fluorocarbon polymer, so that the utilization rate of the platinum catalyst is increased, the platinum load is reduced, and the power density of the membrane electrode is improved.

The invention relates to a method for synthesizing glabridin. According to the method, 2, 4-dimethoxy bromobenzene and diethyl malonate are used as starting raw materials, a key intermediate compound III is prepared through a cuprous iodide catalytic coupling reaction, a reduction reaction and a bromination reaction, methyl-protected glabridin is prepared through nucleophilic substitution and a Friedel-Crafts reaction, and glabridin is obtained after methyl is removed. According to the method for synthesizing glabridin, raw materials are cheap and easy to obtain, and the total yield is high.

The invention provides a method for automatically parking a vehicle for a client. When being applied to the server of a parking lot, the method comprises the following steps that: when vacant parking space information sent by a camera is received, the vehicle is allowed to drive into the parking lot; and an indicating facility is controlled to indicate a vacant parking space direction according to the vacant parking space information. When being applied to the vehicle, the method comprises the following steps that: lane lines of the parking lot and the vacant parking space direction indicated by the indicating facility are identified, so that the direction of a vacant parking space can be determined; and the position of the vacant parking space is determined in the direction of the vacant parking space, and the vehicle automatically parks in the vacant parking space. When being applied to the camera of the parking lot, the method comprises the step that: when it is monitored that a vacant parking space exists in the parking lot, vacant parking space information is sent to the server of the parking lot. With the method provided by the invention adopted, the high-definition map of the parking lot is not needed; the modification of the parking lot is small; and the cost for realizing the automatic parking for the client is reduced. In addition, the invention further provides a system for automatically parking a vehicle for a client, and a vehicle.

The invention provides application of folium artemisiae argyi pigment dye to a cellulose fiber one-bath mordant dyeing process. Cellulose fiber is dyed with the dye through a one-bath mordant dyeing method, so folium artemisiae argyi pigment can serve as plant dye of the cotton fiber; moreover, a dyeing process which applies the folium artemisiae argyi pigment dye to cellulose fiber dyeing and has an industrialized application value is provided; and by the one-bath mordant dyeing method of pure cotton fiber, the color depth K / S value of cotton fabric reaches 3.625, unlubricated friction reaches level 4 to 5, wet friction reaches level 4, color change reaches level 4, staining (cotton) reaches level 4 and hand feeling reaches level 4, the actual industrial production requirements are met, and the technological gap of folium artemisiae argyi pigment plant dye in the prior art is filled.

The invention relates to a method for synthesizing optically pure glabridin. According to the method, chiral carbon of optically pure glabridin is constructed through biological enzyme catalysis, optically pure glabridin is prepared in combination with an organic synthesis method, and the key steps are that a chiral intermediate compound III is generated by using a lipase catalysis compound II, and an important intermediate compound IV is obtained through a bromination reaction. According to the method for synthesizing optically pure glabridin, raw materials are cheap and easy to obtain, and the total yield is high.

The invention discloses a regeneration method of acid washing waste acids, which comprises the following steps: carrying out waste acid early-stage concentration by a triple-effect evaporation technique to evaporate out saturated iron salts from the substance containing hydrofluoric acid, nitric acid and iron salts, replacing the iron salts with sulfuric acid, volatilizing and separating nitric acid and hydrofluoric acid out of the acid mixture by heating assisted by decompression, and condensing the volatilized acid mist and water vapor, thereby obtaining abundant nitric acid and hydrofluoric acid which are used for acid washing.

The invention relates to a low-cost, efficient and stable organic-inorganic hybrid methylamine lead iodine perovskite solar cell and a preparation method and application thereof, and belongs to the field of optoelectronic materials and devices. PbCO3 with the concentration of 200-500 mg / mL is dissolved in an acetic acid methylamine solvent, the solution is spin-coated on an ITO substrate deposited with SnO2 by using a heating spin-coating method, a compact, uniform and stable perovskite thin film is formed through annealing, and the whole process is completely operated in air. And then spin-coating a Spiro-OMeTAD hole transport layer on the thin film, and evaporating a modification layer MoO3 and a metal electrode by using a vacuum evaporation technology to complete the preparation of the device.

The invention relates to a preparation method of an active bamboo charcoal / sulfur composite material and an application thereof. The method comprises steps that S1, the active bamboo charcoal is prepared; and S2, the active bamboo charcoal / sulfur composite material is prepared, the activated bamboo charcoal and the nano-sulfur powder are placed in a ball mill for ball milling for 2-4 hours, the mixture obtained by ball milling is then placed in a reaction vessel taking polytetrafluoroethylene as a substrate for heating and insulation, the reaction time is 10-20 hours, the reaction temperatureis 100-300 DEG C, and the active bamboo charcoal / sulfur composite lithium sulfur battery cathode material is obtained. The method is advantaged in that problems of poor conductivity, severe volume expansion and low sulfur loading of the lithium sulfur primary battery anode material can be effectively solved, discharge efficiency, safety performance and energy density of a lithium sulfur primary battery are improved as a whole, and the shortcoming that the existing battery capacity in the lithium battery technology in the prior art is relatively low is overcome.

The invention relates to a method for synthesizing 1, 8-cineole by catalyzing alpha-terpilenol in a solvent-free system, which adopts a solid catalyst prepared from a quaternary ammonium salt compound and phosphotungstic acid to catalyze the alpha-terpilenol to synthesize the 1, 8-cineole in a solvent-free environment. Wherein the molar ratio of the quaternary ammonium salt compound to the phosphotungstic acid is (1: 1)-(1: 3), the dosage of the solid catalyst is 10%-25% of the mass of the raw material alpha-terpilenol, and the alpha-terpilenol is stirred to react for 10-15 hours at the temperature of 50-80 DEG C and the speed of 500-900 r / min. The prepared solid catalyst can be recycled, no solvent needs to be added, nitrogen protection is not needed, operation is easy, environment friendliness is achieved, the terpilenol conversion rate reaches 81%-98%, the content of 1, 8-cineole in the product reaches 30%-45%, by-products limonene and pinene can serve as fragrant raw materials, and commercial value is achieved.

Producing a xylanase enzyme of superior performance in the bleaching of pulp. More specifically, a modified xylanase of Family 11 that shows improved thermophilicity, alkalophilicity, and thermostability as compared to the natural xylanase. The modified xylanases contain any of three types of modifications: (1) changing amino acids 10, 27, and 29 of Trichoderma reesei xylanase II or the corresponding amino acids of another Family 11 xylanase, where these amino acids are changed to histidine, methionine, and leucine, respectively; (2) substitution of amino acids in the N-terminal region with amino acids from another xylanase enzyme. In a preferred embodiment, substitution of the natural Bacillus circulans or Trichoderma reesei xylanase with a short sequence of amino acids from Thermomonospora fusca xylanase yielded chimeric xylanases with higher thermophilicity and alkalophilicity; (3) an extension upstream of the N-terminus of up to 10 amino acids. In a preferred embodiment, extension of the N-terminus of the xylanase with the tripeptide glycine-arginine-arginine improved its performance.

The invention relates to a multifunctional intelligent lamp and an automatic control method thereof. The intelligent lamp comprises a lamp body, a bulb and a power supply for supplying power to the whole intelligent lamp, and the bulb is connected to the lamp body. The intelligent lamp further comprises an infrared induction module, a face recognition module and an output circuit, the infrared induction module and the face recognition module are both connected with the output circuit, and the output circuit is connected with the bubble. When a human body enters the detection range of the infrared induction module, the infrared induction module generates a control signal and outputs different pulse waveforms to the bulb through the output circuit to control the on and off of the bulb, and aface recognition controller extracts the portrait feature points, and different pulse waveforms are outputted through a pre-established bulb brightness adjustment model and the output circuit to adjust the brightness of the bulb. Compared with the prior art, and according to the present invention, the electric energy is saved, the requirement of people for eye health is met, the user friendlinessis improved, and the commercial utilization value is achieved.

The invention discloses a driving behavior prediction method and system based on a bidirectional long and short term memory network, relates to the technical field of intelligent driving, and solves the technical problem that the driving behavior prediction of a driver is not accurate enough. According to the method, the function of quickly predicting the future longitudinal and transverse driving behaviors of the driver under the short time window is achieved, the prediction precision is high, the future longitudinal and transverse driving behaviors of the driver are predicted under the lightweight vehicle-mounted processor, and the economic cost is low. The method can widely serve the vehicle auxiliary driving system, improves the safety of the auxiliary driving system, enhances the understanding of the auxiliary system for a driver, facilitates the realization of safe driving, and has practicability and commercial value. Meanwhile, the deep learning method based on big data has very high prediction precision, robustness and generalization ability, is helpful for deep development of an advanced driving assistance system, and is widely suitable for driver behavior prediction under different vehicles.

The invention discloses a multi-user MAC channel access method based on a hopping pattern. Based upon an indoor visible light communication system with few user nodes and a small network coverage range, a reliable, high-speed and real-time channel access method is provided. Hardware upon which an MAC layer access scheme of a hopping pattern concept proposed by the invention is based is implementedconveniently, and can be implemented by using an existing commercial component, and the hopping pattern control can be implemented by software, so the cost is low and the method has a commercial value; the hopping pattern concept proposed by the invention can support illumination and communication dual functions; for requirements (not only is indoor illumination met, but a communication functionis also achieved) of the indoor visible light communication system, the method has a practical value and can be applied to production; the multi-user MAC channel access method is proposed based on characteristics of an indoor visible light communication system network; and the hopping pattern reduces channel interference between adjacent network APs when a terminal initially establishes channel access, so an RTS / CTS handshaking protocol is replaced, the access procedures are simplified, and the multi-user MAC channel access method has the feasibility and the effectiveness.