46results about How to "Achieve interference" patented technology

The invention, which relates to the technical field of unmanned aerial vehicle detection and countering, discloses a thunder-magnetic fusion linkage unmanned aerial vehicle detection countering system comprising a low-altitude radar module, an omnidirectional electromagnetic detection module, a dual-light detection tracking module, an information fusion module, a positioning tracking module and a countering module. The unmanned aerial vehicle detection countering system is complete in function and covers a detection means from target search, discovery, identification and confirmation of the unmanned aerial vehicle to positioning and tracking, a strike means from electromagnetic suppression interference and navigation deception and finally evaluation and confirmation of a target countering effect, and a detection countering closed-loop system of the whole process of'detection, control, strike and evaluation 'is achieved; the advantages of the low-altitude radar, the omnidirectional electromagnetic detection device and the dual-light detection tracking device are fully exerted, the defects of each single-machine device are made up, the target discovery accuracy of the unmanned aerial vehicle is greatly improved, and the false alarm rate is reduced.

The invention relates to the technical field of artificial intelligence, and discloses an artificial intelligence-assisted adaptive sickbed control system and method, and the method comprises the steps: carrying out the noise reduction and normalization preprocessing of original physiological data collected by a multi-modal sensor, and obtaining standardized multi-modal data; performing time sequence fusion and dimension reduction to obtain low-dimensional fusion features; performing feature extraction through a multi-branch convolutional neural network to obtain generalization feature representation; the optimal posture demand of the patient is predicted through a long-short term memory network model with an attention mechanism, and an optimal posture demand prediction result is obtained; a layered sickbed adjustment strategy is generated through a double-time-scale reinforcement learning network comprising a priority experience playback mechanism; according to the intelligent sickbed control method and system, the multi-mode sensing data can be comprehensively utilized, the adaptive learning ability is achieved, the intelligent sickbed can be accurately controlled, and the performance and the application effect of the intelligent sickbed are improved.

The invention provides an unmanned aerial vehicle terrain acquisition method, system and device and a storage medium, and relates to the technical field of unmanned aerial vehicles, and the method comprises the steps: determining the number of power supply nodes needed by a target region and the position of each power supply node according to the terrain features of the target region; according to the position of each power supply node, the target area is divided into a plurality of sub-areas, the number of unmanned aerial vehicles required by each sub-area is determined according to the area of each sub-area, and the unmanned aerial vehicles of the corresponding number are distributed to each sub-area; determining an initial flight plan of each unmanned aerial vehicle by combining the residual electric quantity of each unmanned aerial vehicle in each sub-region and the position of a power supply node in each sub-region; and determining electromagnetic interference intensities of different positions in each sub-region according to the region characteristics of each sub-region, adjusting the initial flight plan according to the electromagnetic interference intensities of different positions in each sub-region, and determining a target flight plan of each unmanned aerial vehicle. The technical effect of the invention is that the terrain acquisition work can be reliably completed.

The invention provides a multichannel sound and vibration information fusion speed reducer squeal traceability method, which comprises the following steps of: arranging a plurality of vibration sensors and microphones around a speed reducer, and synchronously acquiring vibration signals and sound signals; converting the multi-channel acoustic vibration signals from a time domain to a frequency domain by adopting short-time Fourier transform and averaging the multi-channel acoustic vibration signals along a time dimension; setting an outburst ratio threshold value to realize howling frequency band screening of the sound spectrum of each channel; summing the screened sound frequency spectrum and vibration frequency spectrum along the channel dimension and carrying out amplitude normalization processing; the processed sound frequency spectrum and the vibration frequency spectrum are multiplied according to corresponding frequency points, and a fusion frequency spectrum of sound and vibration information fusion is obtained; and converting the frequency domain into an order domain to obtain a howling traceability result of the speed reducer. According to the method, after the outburst ratio threshold value is set, professional technicians do not need to analyze data, mutual verification of sound and vibration signals can be achieved, interference of external noise is restrained, fusion of sound and vibration information at the feature level is adopted, and accurate howling traceability can be achieved.

The utility model provides a laser light ray adjusting device, comprising a fixed base which is detachably arranged in a camera; the laser is arranged on the fixed base and is connected with external equipment; the number of the driving components is two, the two driving components are arranged at one end of the fixed base, and the two driving components are correspondingly arranged; the number of the shielding doors is two, the shielding doors are arranged at the moving end of the driving component, the two shielding doors are arranged in a staggered mode, notches are formed in the ends of the shielding doors, and light emitted by the laser can penetrate through the notches; the control driving component is responded to drive the shielding door to move, and then the opening size of the notch is adjusted so as to adjust the length of light emitted by the laser. The laser light adjusting device provided by the utility model can realize efficient and accurate laser light length adjustment, and meets actual application requirements.

The invention discloses a preparation method of a chemically modified titanium-based sensor, which comprises the following steps: pretreatment of a titanium electrode: polishing the surface of the titanium electrode to be smooth and flat, and carrying out ultrasonic cleaning and drying; and chemical modification of the titanium electrode: firstly carrying out nano material modification on the pretreated titanium electrode, and then carrying out functional molecule modification. The invention further discloses a chemically modified titanium-based sensor, application of the chemically modified titanium-based sensor and a method for detecting the titanium content. According to the chemically modified titanium-based sensor provided by the method, the selective adsorption capacity to titanium ions is improved, the accuracy and the reliability of an analysis result are improved, high-sensitivity detection of the titanium content can be realized, and the concentration range is wide.

The invention provides a liquid floated gyroscope signal conversion circuit, conversion device and conditioning conversion method, and the conversion circuit comprises a differential amplification circuit, a phase-sensitive demodulation circuit, a DC amplification filter circuit, an AC output circuit, an anti-reverse connection filter circuit and a secondary power supply circuit. The phase-sensitive demodulation circuit and the direct-current amplification filter circuit are used for performing phase demodulation and conditioning processing on the gyro output signal, outputting a direct-current output signal which is used for measurement of signal acquisition equipment and has small scale factor discreteness, independently performing voltage following processing on the gyro output signal, and outputting an alternating-current output signal; the alternating current signal and the direct current signal are output in parallel and do not influence each other, so that the output signal of the gyroscope body is truly restored, the signal output quality is improved, and the testing efficiency of measuring the angular rate of rotation of the carrier along the gyroscope sensitive axial direction by applying the liquid floated gyroscope is greatly improved.

The application discloses a kind of for tantalum niobium tailings in tin metal recovery's synergistic treatment system, specifically related to metallurgical solid waste resource utilization technical field, acoustic-electricity perception pre-agglomeration module exports pre-agglomeration probability index according to pre-agglomeration threshold value;Heat resistance chromatography module exports the temperature field and fluidized void fraction distribution of suspected agglomeration area;Inhibiting ingredient self-adapting module calculates inhibitor addition rate according to distribution;Wind material decoupling adjustment module exports decoupled wind speed and feed rate set value according to addition rate and bed pressure drop;Chain negative feedback blocking module detects pressure drop deviation to generate feedback correction, superimposed to wind speed set value and reversely adjust feed rate set value, while used to update pre-agglomeration threshold value;The application realizes the online identification of agglomeration precursor, accurate danger area precision inhibiting and the closed-loop cooperation of wind material decoupling, inhibits the nonlinear deterioration of coking loss flow, makes tin recovery rate keep stable when tailings fluctuation, and reduces inhibitor consumption and manual intervention.

The invention discloses a multiband intercept jammer based on light guide microwaves. The multiband intercept jammer comprises a radar detection system, a photoelectric tracking system, a radio monitoring system, an intercept jamming system and a master control system, the radar detection system is used for carrying out target detection on an intercept jammer jurisdiction airspace and completing acquisition of target motion parameter information after a target is detected; the photoelectric tracking system is used for identifying and tracking a target in a jurisdiction airspace of the interception jammer and transmitting a real-time image to the main control system; the radio monitoring system is used for monitoring, receiving and analyzing a target flight control signal so as to obtain azimuth information of a target; the interception interference system is used for implementing suppression interference on a target flight control signal to force a target to land; the master control system is used for processing information collected by the radar detection system, the photoelectric tracking system, the radio monitoring system and the interception interference system and sending control commands.

The utility model discloses a signal base station of 5G communication engineering, which is provided with a reinforcing hoop main body, a first upper reinforcing half hoop is connected with a second upper reinforcing half hoop, a second lower reinforcing half hoop is connected with the second upper reinforcing half hoop, and the reinforcing hoop main body covers the outer side of a stand column. And the effect of reinforcing the stand column can be effectively achieved through cooperation of the multiple sets of reinforcing ribs, and the supporting and toppling prevention performance of the stand column is enhanced. According to the utility model, by arranging the protective cover, the rainproof shielding effect on the 5G communication box can be realized, the first motor and the second motor are further started in the use process, the second motor drives the small gear and the large gear to be in meshed connection so as to drive the protective cover to rotate, and meanwhile, the first motor drives the rotating rod to rotate; and the rotating rod drives the multiple groups of reflectors and triangular pyramids on the outer side to rotate, so that light can be refracted from multiple angles to form reflected light, the phenomenon that birds approach or nest is reduced, and the use effect of the 5G communication box is ensured.

The present invention provides a GBAS pseudo-range correction simulation method and device based on a GPS simulator, the method comprising: obtaining atmospheric parameter information, glide path, and airport information, generating a user's real-time longitude and latitude and speed according to the glide path and airport information, using ephemeris data to provide satellite position information when the initial time is input, and simulating the generation of a GPS intermediate frequency signal reaching the ground, remodulating the GPS intermediate frequency signal according to the atmospheric parameter information, simulating the GPS intermediate frequency signal disturbed by the atmosphere and outputting it through the GPS radio frequency port, demodulating and processing the GPS intermediate frequency signal disturbed by the atmosphere to obtain a pseudo-range, performing differential processing on the pseudo-range and the actual range, obtaining pseudo-range correction data and packaging it as a VDB message for output. The present invention designs a GLS simulator software architecture composed of a DB simulator and a GPS simulator, takes into account the interference of the atmosphere on the signal, realizes the remodulation of the GPS intermediate frequency signal, and simulates the pseudo-range differential correction data of the VDB signal, so that the VDB simulator has data to fill.

The invention discloses a low-slow small aircraft target reconnaissance and interference integrated device, and the device comprises a plurality of receiving and transmitting antennas which are used for obtaining a collection signal, and transmitting an interference signal after the signal amplification; the high-power switches are connected with the transceiving antennas in a one-to-one correspondence manner and are used for switching received and transmitted signals; the microwave transceiving unit is connected with the high-power switch and is used for acquiring the acquired signal and filtering the acquired signal; the signal processing unit is connected with the microwave transceiving unit and is used for processing the filtered acquisition signal to obtain a target signal and a trigger interference signal and transmitting the target signal and the trigger interference signal to the microwave transceiving unit; and the microwave power amplifier is connected with the microwave transceiving unit and the high-power switch and is used for amplifying the interference signal. Through the scheme, the device has the advantages of simple structure, high sensitivity, accuracy, reliability and the like, and has very high practical value and popularization value in the technical field of reconnaissance interference.

The invention discloses a cavitation shot peening surface strengthening method and system based on cooperation of high hydrostatic pressure and spherical focused ultrasound. The method comprises the following steps: establishing and maintaining a hydrostatic pressure environment higher than 0.1 MPa in a high-pressure processing cavity filled with a degassing liquid medium; the to-be-machined surface of the workpiece is positioned in a sound field focal region of the spherical focused ultrasound transducer; and in the high hydrostatic pressure environment, a transducer is driven to work so as to generate a cavitation bubble group in a space confinement range in a focal region of the transducer, and meanwhile, the workpiece is controlled to move according to a preset path, so that cavitation collapse impact acts on a target region on the surface of the workpiece. The device comprises a high-pressure processing cavity, a spherical focused ultrasonic transducer, a multi-degree-of-freedom movement mechanism and a control system. Through cooperation of high hydrostatic pressure constraint and the spherical focusing sound field, precise localization and energy strengthening of the cavitation effect are achieved, a plastic deformation layer can be efficiently and controllably introduced to the surface of a metal material, the surface hardness can be remarkably improved, a residual compressive stress layer is formed, surface layer grains are refined, and the method is suitable for precise surface strengthening of complex components.

The invention relates to a digital coding metasurface-based cross-eye interference method, equipment, equipment and a medium, and the method comprises the steps: taking two digital coding surfaces as antenna structures in the cross-eye interference equipment, symmetrically arranging the two digital coding surfaces at the two sides of a protected target in a monopulse radar visual axis direction, and selecting any one digital coding metasurface, calculating according to wave beam information of interference wave signals to be modulated, a feed source horn and coordinates of all units on the digital coding metasurface to obtain compensation phases of all the units and coding, determining codes on the other metasurface according to the codes on the metasurface, and according to an included angle of a connecting line of a visual axis of the digital coding metasurface and the interfered radar, calculating the interference wave signal to be modulated according to the interference wave signal to be modulated. And determining the amplitude ratio of the two feed source horn emission signals, and generating a modulated interference signal according to the signal amplitude, the amplitude ratio and the two coded digital coding metasurfaces. By adopting the method, the cost can be effectively reduced, and the modulation signal beam pointing can be flexibly controlled.

The present invention is applicable to the field of photoelectric detection technology, and provides a multi-channel lighting method and device based on optical fiber. The opening and closing states of shutters connected to optical fiber channels are determined according to the number of optical fiber channels undergoing lighting tests, and the collection interval of photon collection is determined according to the opening and closing states. According to the collection interval, the channel photon value collected within a preset lighting period is obtained. According to the collection interval and the channel photon value, the actual photon value collected within the preset lighting period is obtained, thereby realizing dynamic collection of multiple channels. Moreover, through the shutter structure, the interference when different channels are illuminated at the same time is reduced, the stability of collection and the accuracy of the results are improved, and the collection cost is reduced.

The present application relates to the technical field of electric machines, in particular to a propelling electric machine rotor dynamic balance correction method and system, the method comprising: obtaining time-synchronized rotation speed signals and vibration signals of the electric machine; determining rotation speed change rates at each time, and determining window lengths of analysis windows at each time based on the rotation speed change rates at each time; determining synchronous component proportions and comprehensive stability indexes of the analysis windows at each time, and determining a working condition correction factor of the electric machine based on a running working condition of the electric machine, the rotation speed change rates at each time of the electric machine, and vibration amplitudes of the vibration signals; determining comprehensive confidence levels of the analysis windows at each time according to the synchronous component proportions, the comprehensive stability indexes, and the working condition correction factor, and selecting target data from the vibration signals and the rotation speed signals according to the comprehensive confidence levels, and performing rotor dynamic balance correction using the target data. In this way, the present application improves the accuracy and consistency of propelling electric machine rotor dynamic balance correction results.

The invention discloses a positioning mapping method and system for a hexapod robot, a storage medium and equipment. The method comprises the steps that two-dimensional point cloud data, three-dimensional point cloud data and real-time attitude data are collected; when it is judged that any attitude angle exceeds a preset stable threshold value, a gait control instruction used for controlling the hexapod robot is generated; an improved Hector-SLAM algorithm is adopted to process the two-dimensional point cloud data to generate a two-dimensional grid map, and an ORB-SLAM3 algorithm fused with YOLOv8 target detection and introduced with a dynamic point grading rejection mechanism is operated to process the three-dimensional point cloud data to generate a three-dimensional point cloud map; performing weighted fusion on the map to obtain a fused environment map; path planning is conducted according to the fusion environment map and the current positioning result, foot end track points are generated through forward and inverse kinematics solution, the hexapod robot is controlled to move, and continuous positioning and mapping are achieved. Through motion control and multi-algorithm fusion, stable and accurate autonomous positioning and mapping of the hexapod robot in a dynamic environment are realized.

This disclosure relates to a battery pack and an electrical device. The battery pack includes a housing and a switching structure. The housing has a battery compartment for housing individual battery cells, an electrical compartment for housing electrical components, and a pressure relief channel communicating with a pressure relief component connected to the individual battery cells. The housing is provided with a pressure relief structure, and the pressure relief channel can communicate with the outside of the housing through the pressure relief structure. The switching structure is connected to the housing and located between the electrical compartment and the pressure relief channel, and the electrical compartment and the pressure relief channel are connected or isolated through the switching structure. Through the above technical solution, the battery pack provided by this disclosure can meet the requirements for airtightness testing of the entire battery pack while also improving the safety of the battery pack.

The invention aims to provide a rolling bearing weak fault feature enhancement extraction method, and belongs to the field of rolling bearing fault diagnosis. Firstly, a 1 / 3 binary tree filter bank is adopted to divide an original signal into a plurality of frequency bands, then spectrum amplitude modulation (SAM) is carried out on each filtered signal, a discrete normalized envelope spectrum peak factor (DNESP) index is established, the most MO range is selected in a self-adaptive mode, and then a normalized square envelope spectrum is reconstructed. And finally, constructing a normalized envelope spectrum peak factor (NESP) as an evaluation index, quantizing and reconstructing the richness of fault information in the normalized square envelope spectrum, and adaptively selecting a demodulation band with significant fault information according to the richness, thereby realizing enhanced extraction of fault features. The method provided by the invention can effectively extract weak fault features of the rolling bearing, and has good robustness for various interferences and noises.

The present invention discloses a holographic microscopic measurement method and device, which relates to the field of optical imaging and digital holographic technology. It is used to solve the problems that the existing digital holographic measurement method has a single detection mode, two-dimensional and three-dimensional detection cannot be performed simultaneously, and the existing multi-mode detection device requires time-sharing or multiple detectors for measurement, resulting in low measurement efficiency, poor data synchronization and high system complexity. It includes: a first rectangular aperture, which is used to shape the first transmitted light so that the first transmitted light forms a rectangular beam; a second splitting part, which is used to divide the first transmitted light into an object light and a reference light with a spacing; a second rectangular aperture, which is used to intercept the object light and the reference light to obtain a non-overlapping part of the reference light, and an overlapping part where a part of the object light and a part of the reference light overlap; an image detector, which is used to collect an off-axis hologram formed by the overlapping part and a micrograph formed by the non-overlapping part of the reference light.

The present invention discloses a method for determining ceramide in a sample, a product and an application thereof, and relates to the technical field of biological detection. The present invention provides a method suitable for simultaneously detecting multiple ceramides, wherein the method optimizes the mobile phase and the gradient elution program used in chromatographic elution, so that multiple ceramides can be separated and detected within 4.5 minutes, the analysis time is short, the throughput is high, and the influence of interference peaks is avoided or reduced, so that the detection signal of the ceramide to be detected can be effectively separated from the interference peak, thereby obtaining a detection result with high stability and good accuracy.

This invention discloses a steganography detection and attack method based on data format deviation, specifically including: acquiring a BinaryPlist file to be detected and reading the file as a binary byte stream; parsing the file header of the BinaryPlist file to determine whether the file conforms to a preset BinaryPlist file identifier format; parsing the offset table information in the BinaryPlist file to obtain the file offset address corresponding to each object in the object table; based on the offset address, parsing each object in the object table one by one to obtain the object type, object length, and object content; determining whether the offset relationship, object boundary, and object content of the object deviate from the format specification of the BinaryPlist file; if a format deviation is detected, determining the position of the corresponding steganography data block; and performing an attack operation on the steganography data block, including steganography data replacement or steganography data erasure, to destroy or block the steganography information.

The invention discloses a near-infrared copper ion fluorescent probe with tumor targeting property as well as a preparation method and application of the near-infrared copper ion fluorescent probe in biological imaging, and belongs to the technical field of analytical chemistry and biology. The near-infrared copper ion fluorescent probe disclosed by the invention can efficiently detect copper ions and specifically target CXCR4 high-expression tumor cells, the near-infrared emission characteristic of the probe avoids biological autofluorescence interference, the imaging definition and sensitivity are improved, and the high selectivity and sensitivity of the probe ensure that the copper ions are accurately detected in a complex biological environment. The kit is suitable for early tumor diagnosis and research; the preparation method is simple, low in cost and suitable for large-scale production. The probe disclosed by the invention not only can monitor the change of copper ions in tumors in real time and reveal a tumor mechanism, but also has wide clinical application prospects including tumor staging, treatment monitoring and the like. The invention provides important technical support for biomedical research and clinical diagnosis.

The invention discloses a method for RNA interference of whitefly eggs, comprising the following steps: dsRNA, star-shaped polymer nanomaterials and surfactants are mixed to obtain an interference reagent; clean cotton seedlings are placed in a greenhouse insect cage to receive eggs for 12h-48h, cotton seedlings are taken out and the number of eggs on the cotton seedlings is recorded; the interference reagent is drawn with a pipette and dripped on the egg body, the dripping process keeps the pipette from touching the egg body, and the droplet is absorbed by the egg body, and the cotton seedlings with eggs are placed back in the greenhouse insect cage to continue to be raised; after the preset time of raising, samples of some eggs are taken, RNA is extracted, and RNA interference efficiency is identified, and the remaining eggs are normally raised in the greenhouse insect cage until the adult emerges, the number of emerging adults is recorded, and the phenotypic changes of adults are observed. The RNA interference method of whitefly eggs of the present invention can eliminate the damage of microinjection to eggs, and while ensuring the hatching rate of eggs, interference with target genes is achieved, breaking through the bottleneck of the interference technology of whitefly eggs.

The invention discloses an SAR (Synthetic Aperture Radar) smart interference method and system for pulse segmentation hybrid modulation, a storage medium and electronic equipment, and the method comprises the following steps: carrying out the complete interception of an SAR transmission signal, and achieving the conversion from a continuous analog signal to a discrete digital signal; dividing the complete pulse into a plurality of segments in equal length according to a preset interference requirement, and rearranging the segments according to a complete inverted sequence; respectively generating a digital interference signal in a deception mode and a digital interference signal in a suppression mode; reconstructing the digital interference signals in different interference modes into continuous analog interference signals; and moving the baseband analog interference signal to a preset carrier frequency band by using an up-conversion modulation mode. The deception jamming effect of irregular distribution of multiple false targets can be achieved under the same jamming system, or the non-blind area suppression jamming effect of multi-area full coverage can be achieved, free switching of the suppression jamming mode and the deception jamming mode is supported, and the jamming output characteristic can be finely controlled through modulation parameters.

The utility model provides a cable and a power utilization system, and belongs to the field of electronic power. The cable comprises a cable body, the cable body comprises a wire, a first insulating layer, a shielding layer and a second insulating layer, the first insulating layer wraps the wire, the shielding layer wraps the first insulating layer, and the second insulating layer wraps the shielding layer; the second insulating layer is provided with an annular notch; the first conductive structure is located at the annular notch and wraps the shielding layer at the annular notch; and the second conductive structure is connected with the first conductive structure and is used for being connected with the outer surface of an electric device. The cable can prevent the electromagnetic field in the electric device from interfering with the cable, and can also prevent the electromagnetic field generated by the cable in the electric device from interfering with other cables.

The application discloses a kind of ammonia nitrogen micro quick on-line detection device and detection method in environment water body, belong to ammonia nitrogen concentration detection technical field, the device with salicylate spectrophotometry as detection principle, integrated sequential injection system, ammonia nitrogen conversion reaction system, chromogenic reaction system and detection system, realize ammonia nitrogen on-line conversion, effectively improve the anti-matrix interference ability of salicylate spectrophotometry analysis ammonia nitrogen.Salicylate spectrophotometry is used as detection principle in the device, integrated sequential injection system, ammonia nitrogen conversion reaction system, chromogenic reaction system and detection system, realize ammonia nitrogen on-line conversion, effectively improve the anti-matrix interference ability of salicylate spectrophotometry analysis ammonia nitrogen.Ammonia gas absorption chromogenic process does not use gas-permeable membrane, avoid the pollution and replacement problem of gas-permeable membrane.The device quantitative analysis uses absorbance instantaneous change rate as quantitative basis, does not need to wait for chromogenic reaction to end, saves analysis time.The device has the advantages of simple operation, fast, miniaturization, reagent consumption is less, anti-matrix interference ability is strong, etc., is suitable for the on-line detection of ammonia nitrogen in surface water, domestic sewage and other water quality.

The present invention discloses a display panel and a display device. The display panel includes a backlight module, a color film substrate, a liquid crystal layer and an array substrate; the color film substrate and the array substrate are arranged opposite to each other, the array substrate is located on the side of the color film substrate away from the backlight module, and the liquid crystal layer is located between the color film substrate and the array substrate; the display panel includes a display area and a non-display area arranged around the display area; the display panel also includes an antenna unit, the antenna unit includes a radiation electrode, the radiation electrode is arranged on the array substrate, and the radiation electrode is located in the non-display area. The above technical solution can reduce the difficulty of integrating the antenna unit, simplify the display panel preparation process, and realize the thinness of the display panel; in addition, while ensuring the normal radiation receiving performance of the radiation electrode and improving the antenna gain effect, the existence of the radiation electrode will not affect the normal display brightness of the display area, which is conducive to improving the display effect of the display panel.

The invention provides an organic waste acidification fermentation and grease preparation method and a fermentation system thereof. The system comprises an acidification fermentation system, a filter membrane device and an oil-producing microbial fermentation system which are connected in sequence, the acidification fermentation system is used for placing fermentation raw materials and inoculation bacteria liquid and is provided with a solid-liquid separation screen; the filter membrane device is used for removing impurity components in the volatile organic acid mixed solution; the oleaginous microbial fermentation system is used for placing volatile organic acid mixed liquor and oleaginous microbial cells. According to the acidification fermentation and grease preparation method and system, effective conversion from multi-element organic waste to microbial grease is achieved, and the technical cost is greatly reduced.