125results about How to "Strong volume" patented technology

The invention relates to a load follow-up loading system for plane flap reliability tests. The system comprises a bearing wall. The system is characterized by further comprising a support component, a load loading adjusting unit and a load detection and adjusting unit, wherein a flap is mounted on a wing; the root of the wing is mounted on the bearing wall; the support component comprises two vertical columns and a transverse beam for supporting the load loading adjusting unit and the load detection and adjusting unit; the load loading unit comprises a moment motor and a steel rope; the moment motor is arranged on the support component and is used for exerting an action force on the flap; the steel rope is connected with the moment motor; the load detection and adjusting unit comprises an angle sensor, a sliding track component and a pulley component. A plurality of loading points are arranged on the surface of the flap, one loading point corresponds to one set of loading system, the size, the direction and an equivalent action point of real-time flap surface aerodynamic force can be simulated.

The invention discloses an omni-directional floating and wall-climbing underwater robot. The omni-directional floating and wall-climbing underwater robot comprises a sealed cabin, an underwater high-definition camera, a main control module, underwater sensing equipment, an omni-directional power system and a vertical power system, wherein the underwater sensing equipment is arranged inside and outside the cabin; the omni-directional power system and the vertical power system are arranged inside and outside the cabin; the omni-directional power system comprises four shrouded propellers, shrouded propeller steering devices, climbing devices and floating devices; the floating devices are arranged in the cabin; one end of each floating device is connected with the corresponding shrouded propeller; the shrouded propeller steering devices and the climbing devices are divided into upper and lower layers, are respectively arranged in the cabin and are connected with each other through respective transmission devices; the vertical power system is vertically arranged inside the cabin. The omni-directional floating and wall-climbing underwater robot has functions of floating, adsorption, wall-climbing and underwater monitoring, is flexible to move, high in practicality, high in maneuverability and wide in application range, can be used for omni-directional floating operation or omni-directional wall-climbing operation, is suitable for working in a narrow water area, and is compact in structure and convenient and easy to operate; the manufacturing cost is reduced; the accuracy of floating movement is improved.

The invention discloses a security protection realizing method and system of a mobile intelligent terminal. The method comprises the following steps: establishing wireless connection between the mobile intelligent terminal and a wireless key component and detecting the strength of wireless signals in real time, so as to judge the distance between the mobile intelligent terminal and the wireless key component; ensuring that the mobile intelligent terminal and the wireless key component respectively perform corresponding remind and alarm operation when the wireless signals attenuate to an alerting critical point or an alarm critical point; simultaneously ensuring that important data in the mobile intelligent terminal can be backed up to the wireless key component to improve the data security; and moreover, ensuring that the stolen or lost mobile intelligent terminal can automatically send positioning data information to a loser, so as to realize the effect of getting back the mobile intelligent terminal. The system not only has complete anti-thief functions, but also has high expandability, and is convenient and practical to use; and the wireless key component is small in volume, convenient to carry about, low in cost, and more beneficial to market promotion and popularization.

The invention relates to an unmanned patrol aircraft for power transmission lines. The unmanned patrol aircraft comprises an aircraft body, a camera system, a cloud deck, a nanometer battery, an aircraft control system, a wireless transmission system, a GPS positioning system and a ground receiving, controlling and managing system. The unmanned patrol aircraft has four ailerons which are symmetrically installed at two sides of a main beam; the unmanned patrol aircraft has the advantages of stable flight, a fast flight speed, high flexibility and great loading capacity; front and rear beams are of segmented design, which facilitates adjustment and wiring. The aileron horns of the ailerons are movably connected with an aileron fixing frame through bolts; the aileron fixing frame is equipped with folding positioning seats; the aileron horns rotate with the bolts as centers and are limited through the folding positioning seats; such a structure enables the aileron horns to be parallely drawn close onto the main beam after folding, so the unmanned patrol aircraft has a small size and is easy to carry. After the front and rear aileron horns are open, lines among center points of four motors on the front and rear aileron horns form a square, and such a structure enables the aircraft to maintain balanced flight and to have reduced current loss and long flying time.

The invention relates to an alternating current (AC) converter for converting high voltage to low voltage in the field of power electronics. The converter comprises an AC chopper circuit, a high-frequency transformer circuit, a rectifier and filter circuit, a waveform conversion circuit and a working frequency inversion circuit which are sequentially connected in series, wherein the AC chopper circuit is used for converting input high-voltage working frequency AC voltage into high-frequency impulse high-voltage AC voltage and outputting the converted voltage to the high-frequency transformer circuit; the high-frequency transformer circuit is used for converting high-frequency impulse high-voltage AC voltage into full wave direct current (DC) voltage and outputting the full wave DC voltageto the rectifier and filter circuit; the rectifier and filter circuit is used for converting the high-frequency impulse low-voltage AC voltage into full wave DC voltage and outputting the full wave DC voltage to the waveform conversion circuit; the waveform conversion circuit is used for boosting the full wave DC voltage, adding input current to the full wave DC voltage and then outputting the combined voltage and current to the working frequency inversion circuit; and the working frequency inversion circuit is used for inverting the DC voltage into working frequency AC sine wave voltage or AC square wave voltage and outputting the inverted voltage. The converter is an AC-AC conversion circuit which has the advantages of small volume, light weight, high efficiency, low cost, simple designand high reliability and can run with a unit power factor.

The invention belongs to the technical field of electrical wire and cable production processes, and particularly relates to a cleaning-type oil-resistant cable. Conductors (1) are copper conductors, the structures of the conductors adopt a first type or a second type, a cross-linked polyethylene insulating layer (2) is extruded on the conductors (1) respectively by applying a warm water cross-linking technology to serve as a cable core, an inner lining layer (3) is arranged outside the cable core, an armor layer (4) is armored by back-twist type galvanized fine steel wires, aluminum-plastic composite tapes are longitudinally coated and welded outside the armor layer (4) to form a water and tide blocking layer (5), and a flame-retardant jacket layer (6) made of a butyronitrile material is arranged at the outermost layer. With a double-layer co-extrusion mode to extrude, the arrangement of the high-strength water and tide blocking layer capable of longitudinally preventing tension in the overall cable and a process of double-layer co-extrusion protection layers, the cleaning-type oil-resistant cable has not only very strong resistance to abrasion and oil, but also better resistance to cleaning, thereby the quality stability of the oil-resistant cable is improved and a new technical field is developed for the development of the cleaning-type oil-resistant cable.

The invention relates to a laser detection method and device used for railway vehicle over the width-limited. According to the method and device, the laser transmitter emits detection laser beam, if the passed vehicle is over the width-limited, laser receiver receives the reflected laser signal and convert to electrical signal, then transmit to the MCU signal processor to process and identify, upload the alarm and location signs information output from the MCU signal processor to the host computer, and send out a sound and light alarm at the scene simultaneously. The device of the invention has the advantages of high spatial resolution, fast response time, strong anti-photoelectric interference, small occupation and easy installation, low cost and so on, which is especially suitable for the automatic detection and alarm of the railway vehicles and over width-limited of goods dynamically.

The invention discloses a novel anti-tumor nano-drug carrier and a preparation method and application thereof. The method comprises the following steps: carrying out an amidation reaction on chitosan and deoxycholic acid to form a copolymer chitosan-deoxycholic acid, forming an intermediate of the chitosan-deoxycholic acid and formaldehyde, carrying out a reaction on the intermediate and polyethylene glycol, carrying out an amidation reaction on the obtained chitosan-deoxycholic acid-polyethylene glycol so as to prepare the novel anti-tumor nano-drug carrier. The characteristics that a folate receptor on the surface of the tumor cells has high expression and the folate receptor hardly has excessive expression in normal tissues are utilized, the novel anti-tumor nano-drug carrier connected with folate and the tumor cells have high affinity, and the defect that the common nanoparticle function is single is overcome. The prepared novel anti-tumor nano-drug carrier can well avoid cytophagy of phagocyte, the carrier circulates in vivo for a long time and is not eliminated, the active targeting modification can be better combined with tumor cell specificity, and the harm of the drug to normal human cells is reduced.

The invention discloses an ultrasonic sound intensity detection circuit. The ultrasonic sound intensity detection circuit utilizes a piezoelectric ceramic sensor to convert load vibration into alternating-current signals, the signals among direct-current fluctuating signals, the frequency of which is higher than 20KHZ, are filtered out by a limiter diode network, a precision full-wave rectifier circuit and a second-order low-pass filter circuit, and after subsequent acquisition and processing, a voltage value U is obtained. The direct-current components in the signals are filtered out by a direct current filter circuit. A frequency value F is then obtained by an amplifying circuit and a hysteresis comparator. According to a relation of a sound intensity value, a voltage signal and working frequency F, W =K * F*U<2>, and thereby an ultrasonic wave-driven sound intensity value can be worked out. The ultrasonic sound intensity detection circuit has the characteristics of small size, high reliability, high anti-interference capability and the like, and is convenient to carry and use.

The invention discloses a character-wheel-type meter reading method and a character-wheel-type direct-reading meter. With respect to a photoelectric direct-reading type meter, at an optical pulse emitting end, a coded optical pulse is transmitted in optical fibers; the coded optical pulse irradiates to a specific position on a character wheel, wherein the specific position is provided with a light reflection or transmission area corresponding to characters on the character wheel; at an optical pulse receiving end, the coded optical pulse from the light reflection or transmission area is received by optical fibers and decoded by a decoding module so as to finally obtain the corresponding characters of the character wheel; the optical fibers at the optical pulse emitting end and the opticalfibers at the optical pulse receiving end are arranged in pairs and are opposite in positions; and in accordance with the system of the character wheel, a corresponding number of pairs of the opticalfibers at the optical pulse emitting / receiving ends are arranged so as to meet a condition that the emitted coded optical pulse and the received coded optical pulse in each pair of optical fibers areconsistent. By means of the invention, the problems of susceptibility to optical pollution, large optical interference between adjacent meters, large electromagnetic interference, poor safety, low reliability, high reading error rate and the like of the traditional direct-reading type meter are solved.

A Chinese medicine in the form of suppository for treating chronic cervicities is prepared from flavescent sophora rhizome, baked alum, bitter apricot kernel, borneol, and the matrix which is the mixture of glyceride of fatty acid and lanolin.

The invention discloses a rapid cooling type aircraft ground air conditioning unit and a control method of the rapid cooling type aircraft ground air conditioning unit. The highest cooling speed and the largest cold quantity input improve the rapid cooling and cold supplying capacity of the aircraft ground air conditioning unit, processed fresh air with a certain flow, cleanliness, proper temperature and high hydrostatic pressure is provided rapidly for an aircraft, the fresh air is fed to a cabin of the aircraft through a special air feeding hose, the fastest and best cooling effect is achieved for the cabin of the aircraft which stops at an aircraft boarding bridge for a short time, physiological requirements of staff in the cabin of the aircraft are met, high comfort level is achieved, the cooling requirements of precision devices in the cabin are met, a comfortable environment is provided for the staff in the cabin and aircraft operators, the metal state of the aircraft operators is improved, and the safety of driving the aircraft is improved. Meanwhile, fuel consumption produced when the aircraft waits on the ground is reduced, the service life of a self-matched expensive air conditioning system of the aircraft is prolonged, the pollution to air environment of an airport is reduced, and high economic and social benefits are achieved.

This invention relates to swing arm magnetic switch with switch body and close block, wherein, The switch body has shell, switch axle composed of static and dynamic probes; the shell is located with isolation rack fixed on the supportive axle and static probes; the supportive axle is fixed with reverse main swing arm at an angle around; the main swing arm is fixed with one permanent iron to make the main arm rotate for an angle through the above close block; the dynamic probe is directly fixed on the main swing arm to keep electrical connection to realize dynamic and static probes.

The catalyst has metal oxide without copper and noble metal as main active component and the composite oxide of RE and transition metal as transition layer assistant. Its preparation process includes coating transition layer assistant sol onto the carrier, drying and roasting, setting in boiled active component solution, heating the solution in the temperature raise rate of 1-2 deg.c / min to 130-190 deg.c, taking out the catalyst, blowing the catalyst to eliminate the residue in the catalyst passages, drying and roasting to obtain the catalyst. The catalyst needs activation before use, has methanol converting rate maintained in 100 % after use for 1000 hr and is suitable for use in hydrogen source system of fuel cell with unstable operation.

The embodiment of the invention discloses an electrostatic discharge unit, comprising a first branch circuit and a second branch circuit, the first branch circuit comprises at least one first bigrid thin film transistor; the second branch circuit comprises at least one second bigrid thin film transistor; the first branch circuit is connected with the second branch circuit in parallel, a common first endpoint is used for being electrically connected to a protected circuit, a common second endpoint is used for being electrically connected to a common electrode wire, and the first bigrid thin film transistor and the second bigrid thin film transistor are opposite in conducting direction. The embodiment of the invention also discloses an array substrate and a liquid crystal display panel. By adopting the electrostatic discharge unit disclosed by the embodiment of the invention, the advantage of being beneficial to realization of a narrow bezel of the liquid crystal display panel is achieved.

An ecceleration-type earthquake sensor is composed of upper and lower electrode with recess, and an intermediate electrode, which is composed of fixing frame, mass block, cantilever beam and transverse beam and can be horizontally moved between two fixed electrodes. Its advantages are high linearity and temp drift and compensation, and small size.

The invention discloses a laser ultrasonic automatic detection system and method for a carbon fiber composite material blade. Grid segmentation is carried out on the surface of a blade to form uniformgrid units; grid cells are scanned through a two-dimensional laser galvanometer; a laser ultrasonic signal is generated on the surface of the material corresponding to the corresponding grid unit; amulti-degree-of-freedom manipulator drives a pulse laser, the two-dimensional laser galvanometer, a field lens and an array type air coupling laser ultrasonic probe to move synchronously according toa preset movement track, so that the two-dimensional laser galvanometer can be used for sequentially scanning all the grid units, the array type air coupling laser ultrasonic probe correspondingly receives a laser ultrasonic signal generated by scanning of the array type air coupling laser ultrasonic probe; imaging is carried out according to laser ultrasonic signals, micron-scale high-precision detection of defects on the surface and inside the whole blade can be achieved, and the purposes of rapid and in-situ detection of the large-curvature curved surface of the carbon fiber composite material blade and miniaturization of the system are achieved.

The invention relates to a laser microdissection system (100), comprising a microscope (10). The microscope comprises a reflected-light device (76), a microscope objective (41), and a laser unit (70). A beam path (b) of a laser beam of the laser unit (70) extends through the reflected-light device (76) and through the microscope objective (41) and intersects with an object plane (15) of the microscope objective (41) at an adjustable point of intersection. An electrophoresis unit (90) having an electrophoresis gel (91) is attached, or can be attached by means of coupling elements (35), below the object plane (15), wherein the electrophoresis gel (91) has at least one gel pocket (92) and the laser microdissection system (100) comprises positioning means (96) for positioning the electrophoresis gel (91) in parallel with the object plane (15) and in relation to a defined reference position, such that dissectates (99) of a sample (51) that can be arranged in the object plane (15), which dissectates are obtained by means of the laser beam of the laser unit (70), can be captured in the at least one gel pocket (92). The invention further relates to a corresponding electrophoresis unit (90) and an examination method.

The invention discloses an NFC (near field communication) antenna and a mobile terminal. The NFC antenna comprises an FPC (flexible printed circuit) antenna, a first ferrite coating and a second ferrite coating, wherein the first ferrite coating and the second ferrite coating are respectively pasted on the two opposite surfaces of the FPC antenna, and in addition, projections of the first ferrite coating and the second ferrite coating on the located plane of the FPC antenna are not overlapped. The NFC antenna according to the embodiment of the invention has the advantages that the signal receiving and sending capability is high, the size is small, the cost is low, and the like.

The invention discloses a pneumatic flotation machine with mechanical stirring, which comprises a cylindrical tank body flotation chamber, wherein a foam product collecting chute is closely fastened on the outer side of the upper end of the flotation chamber, and the outer side of the foam product collecting chute is connected with a concentrate pipe; a hollow shaft connected with a driving device is arranged in the flotation chamber, and the hollow shaft is fixed on the support through a bearing and bearing blocks, a bearing housing is arranged between the bearing blocks, an air inlet formedon the bearing housing is connected with an air inlet pipe, and an air inlet is formed on a hollow shaft corresponding to the bearing housing; the lower end of the hollow shaft is connected with a rotor which has an air outlet, and a stator is arranged on the outer side of the rotor; a feed tank is hoisted on the upper part of the flotation chamber, the feed tank is a tank body with an annular cavity, the annular tank body surrounds the outside of the hollow shaft, a feed inlet is formed on the upper part of the feed tank, and discharging nozzles are uniformly arranged on the lower part of the feed tank; and a tailing chamber is formed at the bottom part of the flotation chamber, and the tailing chamber is communicated with a tailing tank through a pipe. The machine is efficient, energy-saving and very adaptable and is long in service life and low in production cost.

The invention discloses a gas-liquid two-phase flow monitoring device, system and method. The gas-liquid two-phase flow monitoring device comprises a main control module, an excitation module, a silkscreen sensor and a receiving module. The silk screen sensor is electrically connected with the excitation module and the receiving module respectively; the excitation module comprises a polarity conversion circuit, a gating circuit and an amplifying circuit; the polarity conversion circuit and the gating circuit are electrically connected with the main control module respectively; the gating circuit is also electrically connected with the polarity conversion circuit and the amplifying circuit respectively; the receiving module comprises a transimpedance amplification circuit, a first digitalpotentiometer circuit, a voltage amplification circuit, a second digital potentiometer circuit and a signal acquisition circuit; the first digital potentiometer circuit is electrically connected withthe transimpedance amplification circuit and the main control module respectively; the voltage amplification circuit is electrically connected with the transimpedance amplification circuit; the seconddigital potentiometer circuit is electrically connected with the voltage amplification circuit and the main control module respectively; and the signal acquisition circuit is electrically connected with the voltage amplification circuit and the main control module respectively. According to the invention, rapid and accurate measurement of gas-liquid two-phase flow can be realized.

The invention discloses a special cable. The space between a sheath layer and a metal cable core is filled with a liquid-state lubricant layer, so that the liquid-state lubricant layer enables the sheath layer not to be in contact with the metal cable core; a connecting colloid is arranged between adjacent cables and bonds the adjacent cables to enable the position between the cables to be fixed; an armor layer comprises a flat bottom and an arc top; the arc top comprises an inner layer, a middle layer and an outer layer; the special cable further comprises a cable connector apparatus; the cable connector apparatus consists of butting parts on two sides and a connecting part in the middle; the connecting part comprises cable core insertion holes with the same number as cables; contact blocks are arranged in the cable core insertion holes and are connected with guide cores through springs; each butting part comprises a first compaction part and a second compaction part; and the first compaction part comprises a cable insertion hole communicated with the corresponding cable core insertion hole, a first compaction housing and a flexible filling layer filling the space between the first compaction housing and the corresponding cable insertion hole. The special cable has the advantage of excellent compression resistance function.

The invention discloses a detonation shock wave bubble rapid dust fall method. The detonation shock wave bubble rapid dust fall method comprises the following steps that firstly, water is arranged ina water bag, and the ratio of the water volume to the water bag volume is 0.6-0.7; secondly, a foaming agent is arranged in the water bag, and 0.2-0.5 g of the foaming agent is contained in each literof water; thirdly, the water bag is inflated with carbon dioxide gas or carbonic acid at the temperature of 25 DEG C, the water bag is sealed, and the air pressure in the water bag after sealing is 0.5-0.6 MP; fourthly, the water bag is arranged in the two ends of an explosive column in a shot hole, and the shot hole is blocked through plaster; and fifthly, the explosive is detonated through a detonator, the carbonic acid in the water bag is rapidly decomposed to generate a large amount of carbon dioxide gas through heat and vibration generated by explosion, a large number of bubbles are generated in the water bag through the carbon dioxide gas, the water bag is exploded through the high-temperature and high-pressure gas generated through explosion, and bubbles and water mist diffused allaround during water bag explosion are utilized for dust fall. A large number of fine bubbles and a large amount of water mist evenly diffused all around during explosion are utilized for dust removal, and the dust fall effect is good.

The present invention relates to the technical field of food additives, in particular to a novel composite cake foaming emulsifier and a manufacture method thereof. The novel composite cake foaming emulsifier comprises the following raw materials in percentage by weight: 15%-25% of rice syrup, 40%-50% of water, 20%-30% of polyglyceryl fatty ester, 3%-7% of tween-80, and 3%-7% of monostearin. The manufacture method comprises the following steps: respectively weighting the above raw materials according to the above proportion; heating, stirring and mixing the raw materials; adding the mixture into a high-shear emulsification mochine and subjecting the mixture to comprehensive effects such as strong mechanical and hydraulic shear, centrifugal extrusion, liquid layer friction, impingement tear and turbulence in narrow clearances of stators and rotors through powerful kinetic energy brought by high tangential line speed and high frequency mechanical effect which are generated by high speed rotation of the rotors, so that two phases or multiple phases of the raw materials which repel each other or are poorly soluble can be quickly, uniformly and finely dispersed, emulsified and dissolved, and finally the high-quality and stable composite cake foaming emulsifier can be obtained.

The invention belongs to the technical field of an online dust concentration detection system based on a capacitor detection technology. According to the technical scheme, an analog-to-digital converter (2) is connected with a control unit (3), a capacitor sensor (5), a voltage\current converter (6) and an amplification unit (7); the control unit (3) is connected with a communication unit (4), the capacitor sensor (5) and the amplification unit (7); the capacitor sensor (5) is connected with the amplification unit (7); detection control software is installed in the control unit (3); a power supply (1) is used for supplying power to the analog-to-digital converter (2), the control unit (3), the communication unit (4), the capacitor sensor (5), the voltage\current converter (6) and the amplification unit (7). The online dust concentration detection system can be used for directly detecting the dust concentration on line, has the characteristics of high detection precision, high detection speed, convenience in use, high anti-jamming capability, safety and reliability, and also has the characteristics of small size, simple structure, short development cycle and suitability for various industrial severe environments.

The invention discloses a lighting device of double temperature area sideboard, which is characterized by the following: comprising with baffle and lighting component; separating the sideboard to upper and lower cold room; setting the baffle as upper lid, separating temperature cystosepiment and lower lid; arranging the lighting component on the baffle; shining the two cold room at the same time; setting the lighting component as transparent sheet with upper lid and surface as one body, luminous diode array board, lamp frame between the upper lid and the lower lid and lamp shade on the lower surface of the lower lid; arranging a plurality of parallel series LED luminous diode; arranging the lamp frame on the lower lid; Arranging the luminous diode array board in the lamp frame; setting the upper as transparent board; setting the lower as transparent lamp shade; connecting the luminous diode array board to the door switch; controlling the lamp through the door switch. This invention possesses strong safety, which can save space.

The invention discloses a pipeline structure damage monitoring system based on a wireless sensor network. The system comprises a piezoelectric array, multiple damage monitoring nodes, a wireless sensor network base station and a damage evaluation unit, wherein the piezoelectric array is arranged on the outer surface of a pipeline, is used for responding to excitation signals sent by the damage monitoring nodes so as to produce high-frequency ultrasonic guided-wave signals, and is simultaneously used for receiving echo signals reflected when encountering pipeline damage; the damage monitoring nodes are used for acquiring the echo signals, amplifying the echo signals and sending to the wireless sensor network base station; and the damage evaluation unit is used for carrying out damage diagnosis on the echo signals received by the wireless sensor network base station, and positioning and imaging a pipeline damage position. According to the pipeline structure damage monitoring system basedon the wireless sensor network provided by the invention, the damage information uploaded by the nodes is diagnosed, so that the health state of a pipeline structure can be timely fed back in daily inspection process, accurate damage information is provided for maintenance engineers, and the occurrence of safety accidents is prevented.

The invention belongs to the technical field of virtual reality, in particular to a pair of portable virtual reality glasses, and solves the technical problems that the design is unreasonable and the like.The portable virtual reality glasses comprise a lens installation plate and a terminal connection mechanism, wherein lenses are mounted on the lens installation plate, the terminal connection mechanism is located on a video display terminal, the lens installation plate is connected with the terminal connection mechanism by a connection plate, the lens installation plate is suspended right ahead of a video display terminal screen by the connection plate, the lenses on the lens installation plate and the video display terminal screen are arranged in parallel, one end of the connection plate is hinged with the lens installation plate, the other end of the connection plate is hinged with the terminal connection mechanism, an accommodating structure which can save the space when the connection plate and the lens installation plate are in an accommodation state is arranged on the glasses, the accommodating structure comprises a first accommodation groove of the terminal connection mechanism, and the connection plate and the lens installation plate can be folded and accommodated in the first accommodation groove after rotated.

The invention discloses a power distribution network power quality disturbance detection method based on EWT and MFDE, and the method comprises the steps: extracting a PQ disturbance signal in an active power distribution network system, and carrying out the preprocessing; using empirical wavelet decomposition (EWT) to perform modal decomposition on the preprocessed PQ disturbance signal to obtain an intrinsic mode function (BLIMF) containing feature information; using the intrinsic mode function BLIMF containing feature information as the input of a multi-scale oscillation dispersion entropyMFDE algorithm, employing the multi-scale oscillation dispersion entropy MFDE algorithm to carry out the dispersion entropy calculation of the intrinsic mode functions BLIMF obtained through mode decomposition, and obtaining the multi-dimensional entropy vector of the PQ disturbance signal under each intrinsic mode function BLIMF through calculation; carrying out PCA dimension reduction accordingto the obtained entropy vector, and then taking the result as an input quantity of an SVM algorithm; and carrying out PQ disturbance signal identification on the active power distribution network system containing the distributed energy. According to the method, each disturbance in the composite power quality disturbance can be accurately detected and classified, the classification is accurate, and the method has certain anti-noise capability.