55results about How to "Overcome the price" patented technology

The invention provides a magnetic mesoporous silica gel material extracting agent used for enriching and / or separating trace organic pollutants in an environment water sample, and a preparation method thereof. A core of the extracting agent provided by the invention is a silicon gel microsphere (i.e. magnetic silicon gel microsphere) wrapped with a plurality of Fe3O4 magnetic nano particles, and a shell of the extracting agent is a mesoporous silicon gel shell layer with inner and outer surfaces modified by C18 silanization. The extracting agent integrates huge special surface area, excellent extracting capacity and ultrahigh extracting volume of a mesoporous material, magnetic separating capacity of a magnetic material, strong extracting capacity of C18 groups and special volume exclusion function of a vertical channel of the mesoporous material. In addition, the extracting agent provided by the invention has the advantages of high extracting efficiency, low preparation cost and simple preparation method, and is very suitable for preprocessing samples of the trace organic pollutants in a bulk-mass water sample.

A shopping-management system of automation market is prepared as setting a terminal with a bar code scanning unit and platform balance on shopping cart to generate a bar code data and weight data of commodity by scanning and weighing selected commodity, utilizing system management host with a commodity databank and a shopping record storage to generate a shopping record being stored in said shopping record storage when commodity selected by purchaser is put in said shopping cart.

The invention discloses a modified polypropylene non-woven fabric, its preparation method and application. The preparation method comprises: impregnating a polypropylene non-woven fabric in a grafting solution containing a graft monomer, a crosslinking agent, a non-ionic surfactant and a photosensitizer, and initiating graft polymerization under ultraviolet irradiation, thus obtaining the modified polypropylene non-woven fabric, which can be widely used in adsorption separation treatments of dye wastewater, heavy metal ion wastewater, inorganic anion acid radical-containing chemical wastewater and the like as a filtering material. The modified polypropylene non-woven fabric provided by the invention has the characteristics of high mechanical strength, large water flux, and great saturated adsorption capacity. Meanwhile, after being subjected to a regeneration treatment in a cationic surfactant-containing ethanol solvent desorption solution, the adsorbed filtering material can be recycled.

This invention relates to a blood cell analysis method based on machine vision. Inputting the blood sample into a computer by a camera to convert the color image into the black-and-white and then the binary one and scale the binary image; calculating the area and taking count of the scaled image to obtain the number of RBC, WBC and platelet. This invention has high efficiency and accuracy with low cost.

The invention discloses a preparation method of a reinforced concrete beam with a demounting-free textile reinforced concrete (TRC) bottom mould, which relates to a long strip-shaped structural member for bearing. The preparation method comprises the following steps of: A, manufacturing a textile fleece reinforced concrete board: determining the size of the TRC board, and constructing a common steel mouldboard for the TRC board or customizing the steel mouldboard of the required size according to the size of the TRC board, preparing the textile glass fleece, mixing the concrete prepared according to the mass rate, grouting the concrete in the constructed common steel mouldboard or the customized steel mouldboard, paving the textile glass fleece, maintaining, and demounting the mould; and B, manufacturing the concrete beam with the demounting-free TRC bottom mould: constructing a common steel mouldboard for the TRC board or customizing the steel mouldboard of the required size according to the size of the TRC board, reinforcing bars, grouting the concrete, maintaining, and demounting the mould. The TRC board manufactured by using the method disclosed by the invention replaces the current wood mouldboard, the bamboo plywood mouldboard or the steel mouldboard, so that the defects that the current wood mouldboard, the bamboo plywood mouldboard or the steel mouldboard is not environmental-protection, is large in weight, high in price and low in construction efficiency, and can easily cause the conditions that the reinforcing steel bars cannot be accurately positioned and the surface of the member is not smooth after the mould is demounted, and the like can be overcome.

The invention discloses a rock tri-axial test crack extension observation device based on the electrical capacitance tomography technique.The observation device comprises a tri-axial test device and an electrical capacitance tomography system, wherein the tri-axial test device comprises a tri-axial chamber for placing a rock sample, a rubber sleeve for wrapping the rock sample, and a double-layer rubber ring surrounding the rubber sleeve tightly, the electrical capacitance tomography system comprises annular electrodes located between the two layers of the double-layer rubber ring and distributed in the ring direction of the double-layer rubber ring at intervals, a data acquisition module used for measuring the real-time capacitance between any two annular electrodes and converting the real-time capacitance into a capacitance digital signal, and an imaging module used for converting the capacitance digital signal into an image to be displayed, the imaging module sends out a detection digital signal, and the detection digital signal is converted into a detection electric signal through the data acquisition module to provide power for the annular electrodes.Crack extension of rock is observed with the electrical capacitance tomography technique, and visualization of the crack extension process can be achieved.

The invention discloses a multi-module combination practical teaching device of an industrial robot. The multi-module combination practical teaching device comprises an industrial robot demonstration device, a safety rail on the periphery of the industrial robot demonstration device, a master control cabinet on the outer side of the safety rail, a peripheral equipment library and an industrial robot control cabinet, the industrial robot demonstration device is mainly composed of an industrial robot demonstration table, the six-axis industrial robot and double-shear fork mechanism supports, the six-axis industrial robot is arranged in the middle of the industrial robot demonstration table, the double-shear fork mechanism supports are arranged on the two sides of the six-axis industrial robot, and a material taking table and a feeding table are arranged on the double-shear fork mechanism supports respectively. A teaching platform which achieves industrial robot drawing, industrial robot writing, industrial robot fixed point carrying, stacking carrying, tracking carrying, carrying motion recognition, industrial robot assembling and the like and integrates interestingness, innovativeness and automatic development can be automatically developed.

The invention discloses an industrial preparation method of a steel-continuous-fiber composite bar with a rib texture. The method comprises the following steps: sequentially compounding rough fiber yarns and fiber yarn bundles dipped with resin on the surface of a reinforcing steel bar to form the fiber compound bar; and arranging a surface rib texture which can improve the adhesive performance on the outer surface of the fiber compound bar which is formed by compounding. The bar has a reasonable structure, and the fiber yarn bundles used as an enhancing material are fully dipped with resin, so that the inner and outer interfaces have good adhesive performance to effectively satisfy the design strength of the reinforced concrete structure. Meanwhile, the bar further can overcome the deficiencies of high brittleness and high price of existing fiber reinforced plastic (FRP) and is good in actual using effect.

The invention relates to a phase-controlled switch peak zero-cross-switching inrush current control circuit and a control method thereof, and belongs to the technical field of reactive compensation and harmonic filter of electric power systems. The control circuit comprises a control circuit which is provided with an intelligent control device and a magnetic latching relay switch which is used for controlling the connection and disconnection between a capacitor group and a network source, wherein a primary series circuit formed by a high-voltage diode and a high-resistance high-voltage current limiting resistor via series connection is connected beside the magnetic latching relay switch in parallel; a secondary series circuit formed by an auxiliary relay switch and a low-resistance high-voltage current limiting resistor via series connection is connected beside the high-voltage current limiting resistor in parallel; a zero-cross signal input end of the intelligent control device of the control circuit is connected with two ends of a contact of the magnetic latching relay switch; a detection end of a reference phase detection circuit is connected with the network source; a control output end is connected with controlled ends of a primary relay switch and a secondary relay switch. The phase-controlled switch peak zero-cross-switching inrush current control circuit and the control method can be used for solving the problem that the inrush current on the traditional pre-charging circuit is large and the capacitor group is easy to damage, and have the advantages of being energy-saving, environment-friendly, free of energy consumption and suitable for the switching control of multi-phase switched capacitor groups with various connection manners and different voltage classes.

The invention discloses a method for preparing methylacrylic acid-2, 2, 2-ethyl trifluoroacetate. The method adopts methylacrylic acid as the raw material, and the methylacrylic acid is reacted with thionyl chloride under the existence of DMF and polymerization retarder; the obtained methacrylic chloride is reacted with 2, 2, 2-ethyl trifluoroacetate under the existence of catalytic agent, then the target product of the invention-methylacrylic acid-2, 2, 2-ethyl trifluoroacetate-can be collected from the reaction product, the purity rate reaches more than 98 percent (GC), and the production rate is more than 95 percent. The reaction process condition of the invention is bland, the operation is secure and simple, the raw material sources are extensive, and the price is low; compared with the prior technology, the invention overcomes the deficiencies that the raw material price is expensive, the preservation and the transportation of the raw material are difficult, the reaction system request is harsh, the equipment corrosiveness is strong, the product quality is steady, the purity rate is good, the production rate is high, and the invention is suitable for large-scale industrialization production.

The invention discloses a method of industrially preparing a steel-continuous-fiber composite bar. The method comprises the following steps: sequentially compounding rough fiber yarns and fiber yarn bundles dipped with resin on the surface of a reinforcing steel bar to form the fiber compound bar. The fiber compound bar compounded by the process has a reasonable structure and the fiber yarn bundles used as an enhancing material are fully dipped with resin, so that the inner and outer interfaces have good adhesive performance to effectively satisfy the design strength of the reinforced concrete structure. Meanwhile, the bar further can overcome the deficiencies of high brittleness and high price of existing fiber reinforced plastic (FRP) and is good in actual using effect.

The invention discloses a software gas driving hand rehabilitation device. A hand actuator is wore on a hand of a patient and used for driving the hand of the patient to move; a gas driving system is communicated with the hand actuator through an air pipe and used for providing the hand actuator with gas drive, so that the hand actuator drives the hand of the patient to move; a micro controller is connected with the gas driving system and used for sending control signals to the gas driving system to control the gas driving system. Compared with existing hand rehabilitation devices, the hand rehabilitation device has the advantages of being low in price, comfortable to wear, safe and efficient. The deflects that the existing hand rehabilitation devices are high in price, heavy, uncomfortable to wear, and low in safety are overcome. The device can be extensively used in the hand hemiplegia rehabilitation training of apoplexy patients.

The invention discloses a method for preparing a diethylene glycol dibenzoate plasticizer. The method comprises the following steps of: mixing multiple kinds of polyalcohol raw materials and reacting with benzoic acid, wherein the polyalcohol raw materials comprise diglycol, dipropylene glycol, glycol and / or glycerol; adding the polyalcohol raw materials into a reactor and uniformly stirring; adding benzoic acid, a catalyst and a water-carrying agent; heating to 90 to 130 DEG C and reacting for 6 to 10 hours; and neutralizing after the reaction is finished, separating and recovering water and the water-carrying agent, and filtering. In the method, the multiple kinds of polyalcohol raw materials are mixed and then subjected to esterification reaction together with the benzoic acid, so that the esterification reaction can be smoothly carried out, the reaction temperature can be reduced, the reaction speed can be increased, the reaction time can be shortened, the industrial mass production is facilitated, and the production cost can be reduced; the plasticizer prepared by the method has equivalent plasticizing performance as that of dioctyl phthalate (DOP) and superior oil resistance, solvent resistance and the like to those of DOP; in addition, both each raw material and the reaction product are nontoxic or low-toxicity components which meet the environmental protection requirement.

The invention discloses a fuel cell current density partition test system and method, and belongs to the technical field of fuel cell in-situ detection. The system comprises a gas supply module, an electronic load, a signal amplification module, a data acquisition module, a data processing module and a fuel cell stack. The gas supply module provides an oxidizing agent and fuel for the fuel cell stack, the electronic load is loaded on the fuel cell stack, the signal amplification module amplifies a signal transmitted by the fuel cell stack, the data acquisition module acquires an output signalof the signal amplification module, and the data processing module processes the signal acquired by the data acquisition module. According to the invention, the sampling resistor is placed at the backof the partitioned gold-plated copper foil, so that the consistency of impedance of each partition is ensured. The impedance of each subarea is consistent, so that the sampling result can truly reflect the actual current density distribution characteristic in the galvanic pile. The problems that the precision of the sampling resistor is difficult to control and the device cost is high are solved,and the current density distribution of a large number of matrix partitions can be measured.

The invention discloses a handheld FC bus tester which comprises a data capturing module, a data sending module, a statistics module, a human-computer interface and a control module, wherein the data capturing module captures data, stores the data into a storage unit, and has data filtering and data triggering functions; the data sending module sends the data to tested equipment by an optical interface; the statistics module carries out statistics on the data captured by the data capturing module and the data sent by the data sending module, obtains short-term statistic values and accumulated statistic values, and carries out data interaction with the control module; the human-computer interface receives input control information and displays a testing result; and the control module controls coordinative operation of the data capturing module, the data sending module, the statistics module, a protocol parsing module and the human-computer interface. The handheld FC bus tester disclosed by the invention solves the problems of low integration, inconvenience for carrying, high price and the like of an existing testing instrument, so that the handheld FC bus tester not only meets requirements for FC protocol analysis and testing, but also is simple, easy to use and convenient to carry.

Disclosed are a tubular traction pressurization connecting rod control device and an outer-bone fixing device. The device is composed of a traction pressurization connecting rod, steel needle fixing clamps and steel needles. The traction pressurization connecting rod is composed of a full-thread connecting rod body, at least one sleeve pipe and nuts, wherein the full-thread connecting rod body is sleeved with the at least one sleeve pipe and the nuts are fixed at the positions, at the two ends of the sleeve pipe, of the full-thread connecting rod body. The steel needle fixing clamps are connected to the traction pressurization connecting rod, and the steel needle fixing clamps are composed of steel needle pressing pads, screwed hole gaskets, bases, screws, upper nuts and lower nuts. The screws sequentially penetrate through holes in the centers of the steel needle pressing pads, holes in the centers of the screwed hole gaskets and holes in the centers of the bases, the upper nuts are located on the steel needle pressing pads and connected with the screws through threads, and the lower nuts are located under the bases and connected with the screws through threads. The tubular traction pressurization connecting rod control device and the outer-bone fixing device are flexible to combine and convenient to operate, have the functions of static fixation, mechanical traction and pressurization, have very good fixing, anti-shearing and anti-rotating capacities, are applicable to spiral fractures, oblique fractures and intertrochanteric unstable fractures of shinbones and thighbones, and are especially applicable to outer fixation of comminuted fracture.

The invention discloses an underground cavity measuring method using flow quantity and flow velocity relationship and belongs to the technical field of surface subsidence exploration. The method overcomes the drawbacks of small exploration range, expensive price and complicated operation and the like in the existing exploring underground cavity measurement. The method mainly uses the flow quantity and flow velocity relationship to measure the volume of the underground cavity. Data including lowest wind speed, highest wind speed and double-vane anemometer time from rotating to stopping are obtained through coordination between parts including a double-vane anemometer, an air compressor, a first pressure gauge, a second pressure gauge and the like, and the volume of the underground cavity is further obtained by calculation. Different from the measuring method in the prior art, the underground cavity measuring method using the flow quantity and flow velocity relationship is simple in operation, wide in application range and accurate and reliable in results.

Nominal diameter of body case of the battery is 2.0-5.0 mm, and height is 20-80 mm sealed by columned rubber. Formula of anode material are: manganese dioxide : acetylene black : graphite : Teflon latex : absolute ethyl alcohol : pure water = (47.0%-48.0) : (4.2%-4.4%) : (1.0%-3.0%) : (1.3%-1.5%) : (5.0%-5.5%) : (37.0%-40.0%). The preparation method includes compounding materials of anode; fabricating positive pole plate and procedure of assembling battery. In the invention, feed rate of Teflon latex is reduced and content of graphite is increased so as to raise conductivity, and reduce internal resistance.

The invention relates to a colorimetric detection method of sugar content of water, which comprises the steps of: under the condition of concentrated sulfuric acid, taking alpha-naphthol as a color-developing agent to prepare furfuraldehyde and derivatives thereof under the action of sugar and the concentrated sulfuric acid, and further performing condensation of the furfuraldehyde and the derivatives thereof and the alpha-naphthol to obtain purple complex compounds; and measuring reactant and recording change of intensity of transmitted light of aubergine condensation compounds absorbing absorb light with wavelength of 595 nanometers by a photoelectric colorimeter to obtain a response curve with corresponding peak height and peak width, and comparing the peak height of the curve with that of a light absorption curve of master standard water with a known sugar concentration to obtain sugar content values in water samples through calculation. The method has the advantages that: the on-line detection of the content of sugar with low content in water or solution can be performed; the process is simple, convenient and short; the detection data is accurate and reliable; the sample injected for one time of detection is only 50mu m to 1ml; only a very small amount of reagent is consumed each time; the operation cost is low; and the reagent is safe and nontoxic.

The invention relates to a method for detecting carboxylic acid flavor ingredients in tobacco products, mainstream smoke and heated non-burning cigarettes. According to the method, by virtue of signalidentification of differential marked tobacco products, mainstream smoke and heated non-burning cigarette samples, the problems that the ionization efficiency is low and the sensitivity is insufficient during mass spectrometric detection of the carboxylic acid flavor ingredients are solved, and non-targeting analysis of the carboxylic acid flavor ingredients in the samples is realized.

The invention discloses nano black selenium with peroxidase simulating activity, and a preparation method of the nano black selenium, and belongs to the fields of preparation and application of nano materials. The preparation method is as follows: nano-sized black elemental selenium is prepared from selenium dioxide as a raw material and concentrated sulfuric acid as a reducing agent under a solvent thermal condition. The substance has catalytic activity of similar peroxidase; and chromogenic reaction of a peroxidase substrate 3,3',5,5'-tetramethyl benzidine and hydrogen peroxide can be catalyzed, so that the preparation method is simple; the reaction product is easy to separate and purify; the used reaction apparatus and reagent are low in price; the defects that a natural enzyme is difficult to purify and high in price are overcome; and the nano black selenium can be applied to a working environment with easy occurrence of denaturation, and has a good application prospect in the field of green synthesis of a water-soluble conductive polymer.

The invention provides a manufacturing method of a rolling bearing which takes mixture of polyethylene oil and solid lubricating material as lubricant and the rolling bearing. The manufacturing method comprises the steps of injecting the lubricant which comprises mixture of polyethylene oil and solid lubricating material micropowder into cavity of the bearing and stamping a dust cap, thus a high temperature resistant sealed bearing is obtained. When the bearing operates at the temperature of being lower than oxidation chain scission temperature of the polyethylene oil, fluid film lubrication is formed; and when the bearing operates at the temperature of being higher than the oxidation chain scission temperature of the polyethylene oil, the polyethylene oil volatilizes, and the fluid film lubrication is changed into solid film lubrication. Compared with the prior art, the invention has the advantages that the problems that perfluoropolyether high temperature lubrication oil has high price and carbon is deposited at high temperature are solved, the problem that solid lubricant is required to be adopted from the start is solved, the bearing can actively realize conversion from fluid lubrication to solid lubrication according to running temperature, respective maximum advantages of the fluid lubrication and the solid lubrication are fully played, operational reliability of the bearing is improved and life of the bearing is prolonged, and the bearing is applicable to various high temperature environments.

The invention discloses a method for preparing 3-acetamidofuran and derivatives thereof from marine waste biomass. Marine waste biomass chitin or a degradation product acetylglucosamine of the marinewaste biomass chitin is used as a raw material; under the action of a basic catalyst, cyclization dehydration and deacetylation reaction are performed to form 3-acetamidofuran, and the 3-acetamidofuran is further hydrolyzed to obtain the 3-aminofuran. The target product is prepared from the marine waste biomass, the reaction steps are simple, the raw materials are cheap and renewable, the operation is convenient, the product yield is high, and a new method is provided for utilization of the marine waste biomass.

The invention discloses a special soluble formula fertilizer for grapes and an application method thereof. The formula fertilizer comprises a fertilizer a, a fertilizer b and a fertilizer c, wherein the fertilizer a consists of carbamide, diammonium phosphate, potassium sulfate, zinc sulfate and borax; each of the fertilizer b and the fertilizer c consists of carbamide, diammonium phosphate and potassium sulfate; the components are matched according to a required proportion. The method comprises the steps as follows: firstly, the fertilizer a, the fertilizer b and the fertilizer c are respectively prepared into solutions with the weight percentage of 0.2-0.3%; secondly, utilizing the fertilizer a to conduct drip irrigation before the florescence; thirdly, utilizing the fertilizer b to conduct drip irrigation after the florescence; fourthly, utilizing the fertilizer c to conduct drip irrigation at the initial stage of coloring. According to the formula fertilizer and the application method thereof, the fertilization is implemented with pertinence completely according to the proportion of the nutrients required by the grapes at various growing periods so as to achieve the aims of cost saving, quality improving and efficiency improving; the defects that the matching of the ordinary compound fertilizer is not scientific and the cost of the ordinary soluble fertilizer is high are overcome; moreover, root drip pipes or irrigation are adopted for topdressing, so that the fertilizer effect can be taken quickly, and the labor cost is reduced.

The invention discloses a novel rubber and plastic sports floor and a preparation method, and belongs to the technical field of environment-friendly floors. The rubber and plastic sports floor comprises a rubber wear-resisting layer (1), a PVC pressure-resisting layer (2-1), a PVC stable layer (2-2), a PVC elastic foaming layer (2-3) and a PVC back sealing layer (2-4); by means of banburying, openmilling, rolling, vulcanization, grinding and edge cutting, the rubber wear-resisting layer (1) is obtained, the rolling technology, the coating technology and a fitting device are synthesized for preparing the PVC composite layer (2), finally, an adhesion agent is used for bonding the rubber wear-resisting layer (1) and the PVC composite layer (2) to obtain the novel rubber and plastic sports floor. The novel rubber and plastic sports floor has the advantages of a rubber floor and a PVC sports floor, and overcomes the defects that a traditional rubber floor is high in price, difficult in high quality dense foaming air hole production, low in PVC sports floor strength, not applicable to high-strength occasions, poor in weather resistance, poor in aging resistance and not likely to changecolor, a plasticizer is contained, and the plasticizer is extracted after long-term use.

The invention discloses a car window anti-pinch system based on OBD-II interfaces. The car window anti-pinch system comprises a plurality of client sides. Each client side comprises an ascending mechanism, a control mechanism, one OBD-II interface and a displayer. The control mechanisms are connected with a car control device through the OBD-II interfaces. Current detection devices detect current values of a car window motor in real time and send the current values to the control mechanisms. The control mechanisms judge whether a person is pinched by a car window when the car window ascends through the current values of the car window motor. According to the design, on the basis that an original car circuit is not damaged, the car window anti-pinch function is provided for a car without the car window anti-pinch function, and the defects that a car window anti-pinch system configured on a car production enterprise is high in price and can not be conveniently popularized are overcome; meanwhile, intelligent monitoring and management of the current values of the car window motor are achieved, and the car window anti-pinch system is more intelligent and user-friendly.

The invention provides an electromagnetic shielding material for power supply equipment and a preparation method thereof. The electromagnetic shielding material is prepared from the following components: plant fibers, an auxiliary filler, polycarbonate, an oxidant, a flexibilizer, a dispersant, a coupling agent and an acid solution. The electromagnetic shielding material prepared by the method provided by the invention is wide in shielding range, high in shielding efficiency, and cheap and easily available in raw materials, and the preparation method is simple in operation, low in process condition requirement and low in production cost, and has a good large-scale production prospect.

The invention relates to a Cu / mesoporous organic silicon oxide nanotube desulfurization adsorbent and a preparation method thereof, and belongs to the technical field of oil refining and adsorption separation. The Cu / mesoporous organic silicon oxide nanotube desulfurization adsorbent is obtained by carrying out hydrolytic polycondensation on an organic silicon source containing a bipyridine groupunder the guidance of P123 and loading metal copper on the surface and the inner wall of a nanotube in an in-situ coordination loading manner. The adsorben overcomes the technical defects of low masstransfer diffusion efficiency, poor metal dispersibility, easy shedding and high price of traditional adsorbents, and has the advantages of simple preparation process and low cost. During adsorption desulfurization, the equilibrium adsorption capacity of the adsorbent to thiophene sulfides is obviously higher than that of Cu-SBA-15 and is 24% higher than that of Cu-BTC, and the adsorbent has a good application prospect in the field of deep adsorption desulfurization.

The application relates to a solid-state laser radar and a laser scanning system thereof. The solid-state laser radar is characterized by comprising a laser emitting array, wherein the laser emittingarray comprises M laser emitters, each laser emitter is used for emitting a beam of laser and used for forming M laser beams emitted from a y direction and distributed along a z direction; and a beamdeflection component group which comprises multiple bean deflection components arranged at an emitting direction of the laser emitting array and cascaded on the y direction vertical to the z directionand located in the xy plane, wherein the size of the multiple beam deflection components can cover the M laser beams, and the beam deflection components can be used for deflecting M laser beams.

The invention provides a high-power illuminating device assembled by low-power LEDs (Light Emitting Diodes). The invention relates to an LED illuminating device which comprises a direct-current constant-voltage power supply, a circuit board for high-density plug-in LEDs and a heat radiation device, wherein the voltage provided by the direct-current constant-voltage power supply is 250 volt, and the current provided is 0.44-1.1 ampere; the connection manner of the LEDs inserted on the circuit board is that a first quantity of LEDs are connected in series to form an LED lamp bank, then a second quantity of LEDs are connected in parallel to form a whole LED lamp module circuit, wherein the first quantity of LEDs has to meet the condition that the voltage sum of the first quantity of serially-connected LEDs is equivalent to 250 volt; and the second quantity of LEDs is determined according to the total power required by the LED illuminating device. The high-power illuminating device overcomes a series of defects that a high-power LED street lamp has quick light decay, insufficient brightness and high price, is easy to damage and the like and has the advantages of high brightens, high reliability and reasonable cost, and the power factor is kept within the scope of 0.95-0.98.