70results about How to "Improve lightweight performance" patented technology

The invention discloses a wearable NIRS-EEG based schizophrenia early detection evaluation system. The system comprises an NIRS-EEG bimodal cerebral function monitor device, a mobile intelligent terminal and a network server, wherein the NIRS-EEG bimodal cerebral function monitor device is used for acquiring cerebral function information of schizophrenia patients or healthy persons in real time by adopting NIRS and EEG technologies, and transmitting the cerebral function information to the mobile intelligent terminal through bluetooth signals; the mobile intelligent terminal is used for uploading data to the network server for data processing via mobile internet; and the network server is used for saving the processed data, generating a corresponding diagnosis result, and feeding back to the mobile intelligent terminal for data waveform display. The system has the advantages of accurate detection evaluation result and extremely low power consumption, and can be used for quickly and conveniently performing early detection and disease early warning for schizophrenia patients and providing scientific and reasonable guidance for nursing schizophrenia patients, so that pains and psychological burden of schizophrenia patients and family members thereof can be reduced.

The invention relates to a combined motor pair trawling test table and an installation method thereof. The combined motor pair trawling test table comprises a first work table, a second work table, a load motor, a tested motor, a first shaft coupler, a second shaft coupler and a torque sensor, wherein the first work table and the second work table are connected through a connecting plate; guide rails are arranged on the work tables; slide blocks are arranged on the guide rails; installing bottom plates are fixed on the slide blocks; the load motor and the tested motor are fixed on the installing bottom plates; installing holes with different sizes and gaps are formed in each installing bottom plate; the slide blocks are driven by lead screw mechanisms and are braked by guide rail clamping devices; the torque sensor is arranged on a support seat; the bottom of each work table is provided with a bottom foot capable of performing height regulation. The installing method comprises the following steps of installing the work tables; adjusting the flatness and the straightness of the test table; installing the motor, the shaft coupler, the torque sensor, and performing fine adjustment to realize axial line centering. The combined motor pair trawling test table and the installation method have the advantages that light weight and convenience are realized; the moving is easy; the motor centering operation is convenient; the centering precision is easy to control; the motor installation is convenient; the test requirements of motors in different machine types are met.

The invention discloses a special soft and wear-proof shoe material. The special soft and wear-proof shoe material is characterized by taking a compound synergetic SBS system as a base material and comprising the following components in percentage by weight: 75-85% of high-molecular-weight SBS, 10-20% of high-styrene SBS and 1-8% of star-like low-styrene SBS, wherein the number-average molecular weight of the high-molecular-weight SBS is greater than 200000, and the content of styrene is less than 35%; the content of styrene in the high-styrene SBS is greater than 40%; the content of styrene in the star-like low-styrene SBS is less than 20%. The invention also discloses a preparation method of the special soft and wear-proof shoe material; the process is simple; the prepared shoe material has the characteristics of softness, wear resistance and light weight.

The invention discloses a remote mobile phone test experiencing method based on the RTMP. The remote mobile phone test experiencing method based on the RTMP comprises the following steps that S1, the screen content of a current mobile phone is captured in real time and the screen content is stored in a buffer zone; S2 compression conversion is conducted on screen image data and the screen image data are encoded into video stream data; S3 the video stream data are transmitted to an uploading server, and a stream media uploading module is uploaded to an RTMP stream media server through an RTMP stream media protocol; S4 the stream media server releases video streams to a webpage client side, the client side logs in the webpage client side address on the stream media server through a browser to conduct remote mobile phone browsing, wherein the webpage client side address is located on the stream media server and the media streams are released on the webpage client side address; S5 a user transmits control action information to a control information analysis module on the uploading server through a user-defined protocol, an operation request is responded at a mobile phone terminal which the user applies for, and the response is fed back to the webpage client side through the S4. The remote mobile phone test experiencing method based on the RTMP has the advantages that the protocols used in the system are simple and the encoding efficiency is improved.

The invention discloses a wearable multimode brain function detection device based on NIRS-EEG. The wearable multimode brain function detection device comprises an NIRS-EEG detection unit, an ultra-low power consumption control unit, a state prompt unit, a Bluetooth communication unit, a key input unit and a power supply unit; the ultra-low power consumption control unit is connected with the NIRS-EEG detection unit, the state prompt unit and the Bluetooth communication unit respectively, the ultra-low power consumption control unit conducts data instruction communication with the NIRS-EEG detection unit through SPI interfaces, the ultra-low power consumption control unit conducts data transmission communication with the Bluetooth communication unit through a UART serial port communication protocol, and the Bluetooth communication unit sends received data to a mobile terminal for subsequent processing; the key input unit is connected with the power supply unit, and the power supply unit is used for supplying power to the NIRS-EEG detection unit, the ultra-low power consumption control unit, the state prompt unit and the Bluetooth communication unit and conducting power supply protection and power management. The wearable multimode brain function detection device has good comfortability, and monitoring on occasions such as the brain cognitive function, neurological and psychiatric diseases and sleep and fatigue states can be conveniently conducted anytime and anywhere.

The invention provides a raw material pretreatment method for improving the light performance of residual oil. By means of the cavatition and recombination effects of ultrasonic waves, the colloid structure of the residual oil is changed, the structural composition of the residual oil is optimized, the distribution uniformity of four components is promoted, the stability of a colloid system is improved, and the quality of the residual oil is totally improved, so that the hydrogenation effect of the residual oil is remarkably improved. Residual oil from different sources has relatively large difference in ultrasonic treatment effect. Known from hydrotreated data, the method can be used for reducing the average relative molecular weight of the vacuum residual oil by 3-6%, reducing the viscosity by 5-12%, reducing the carbon residue value by about 21-40%, increasing the hydrogenated residual oil conversion ratio by 8-10%, increasing the light oil yield by 7-11% and the like. The method has the advantages of simplicity in treatment, convenience in operation, low cost and capabilities of more remarkably improving the quality of the residual oil, greatly increasing the conversion ratio of the residual oil and ensuring that the treated residual oil is easier to process and treat in processes such as residual oil hydrogenation and the like.

The invention discloses a method for determining the power-assisting current of an electric power-assisted steering system, which comprises the following steps of: obtaining maximum power-assisting current, minimum power-assisting current and threshold speed; obtaining the speed value of an automobile; comparing the speed value with the threshold speed; when the speed value is larger than the threshold speed, determining the minimum power-assisting current as the power-assisting current of the electric power-assisted steering system; and when the speed value is smaller than or equal to the threshold value, determining the power-assisting current of the electric power-assisted steering system according to the corresponding relation between the power-assisting current and the speed. By adopting the method disclosed by the invention, the power-assisting current can be determined under the situation that road testing is not conducted, the development cost can be reduced, the power-assisting current corresponding to any speed within maximum design speed can be determined, the generated steering assisting power is more accurate by following the requirement that the speed is approximately in inverse proportion to the power-assisting current within the range of the threshold speed, and the stability and the portability of the electric power-assisted steering system are improved. The invention additionally discloses a device for determining the power-assisting current of the electric power-assisted steering system.

The invention discloses a cake oven in a joining structure, including a tray seat, a tray cover hinged to the rear side edge of the tray seat, a first heating pipe provided on the bottom surface of the tray seat, a second heating pipe provided on the top surface of the tray seat, and a temperature controller provided on the top surface of the tray seat, wherein, the temperature controller is connected to the first heating pipe and the second heating pipe through wires; a first handle is provided at the bottom of the front edge of the tray seat, correspondingly a second handle is provided at the top of the front edge of the tray seat, and the second handle is matched with the first handle; the top surface of the second handle is provided with a rotary button, and the rotary button is connected to the temperature controller through wires; the tray seat and tray cover are hinged and respectively provided on the top and bottom of one side, which has compact structure and convenient disassembly and assembly; the matched first and second handles are mounted at the other side of the tray seat and the tray cover, which has easy operation and convenient use; and locks are provided between the first handle and second handle, which has firm connection solid and flexible start and stop.

The invention provides a hair drier, and relates to the technical field of household appliances. The hair drier comprises a shell, an electromotor and a fan, wherein the shell comprises an air cylinder part with an air inlet and an air outlet and a handle part communicating with the air cylinder part, the air cylinder part is provided with a first end and a second end which are spaced in the axisdirection of the air cylinder part, the air inlet is formed close to the first end, and the air outlet is formed close to the second end; a guide plate is arranged in the shell and used for guiding air to flow from the air inlet into the handle part, and then flow out of the air outlet; and the electromotor is connected with the fan in a transmission mode, the electromotor and the fan are both arranged on the handle part and located on the side, close to the air outlet, of the guide plate. According to the hair drier, the electromotor and the fan are both arranged on the handle part, the distance between the air inlet and the air outlet is shortened, the size of the shell is reduced accordingly, the manufacturing cost is lowered, and the user experience feeling is improved.

The invention discloses a wastewater treatment device for textile processing, and relates to the technical field of wastewater treatment. The device comprises a box body, wherein a top box is fixedlyconnected to the top part of the box body; a moving device is fixedly connected to the bottom part of the inner wall of the top box; the moving device comprises a first motor of which the bottom partis fixedly connected to the bottom part of the inner wall of the top box; a supporting plate is fixedly connected to the bottom part of the inner wall of the top box; a rod body passes through one side of the supporting plate. According to the device, a water tank is fixedly connected to the bottom part of one side of the box body, so that the next treatment can be conveniently carried out, and the wastewater can be conveniently treated; a motor case is fixedly connected to the end, extending into the box body, of the connecting rod, and disinfectant fluid is added and stirred, so that the wastewater safety is improved, and the damage to the environment is decreased; the disinfected wastewater is further filtered, so that the cleanness of the wastewater is greatly improved, and the water resource is saved.

A system for determining a representation of an acoustic field (P) comprising: an acoustic capture device (1) comprising a plurality of metasensors (21 to 2Q) distributed in space and each delivering a measurement signal (c1 to cQ); Said measurement signals (c1 to cQ) apply a filter combination representative of the structural properties of said acquisition means (1) in order to deliver a plurality of acoustic signals (sc1 to scN) to processing means (8), each of which is associated with a relative A predetermined generalized rendering direction association defined by a given point (14) in space. This set of acoustic signals (sc1 to scN) forms a representation of said sound field (P). The invention is characterized in that said metasensors (21 to 2Q) are distributed in a substantially irregular manner in space and said filter combination is representative of said distribution.

The invention discloses a liquid-cooled high-current charging system of an electric vehicle. The liquid-cooled high-current charging system comprises a charging connector, a cable fixing and protecting device, a cable body, a charging pile and a charging pile power supply module. Two ends of the cable body are respectively connected with the charging connector and the charging pile through the cable fixing and protecting device, and the charging pile power supply module is installed in the charging pile. The liquid-cooling large-current charging system is provided with a corresponding liquid cooling device for carrying out circulating cooling on easily-heated parts in the charging process, so that heating during charging is greatly reduced and the safety performance is improved; the numberof required conductors is small; the charging current can be greatly improved to improve the charging power under the working condition that the number of the required conductors is the same as thatof the conductors in the prior art, or the number of resources of the conductors is greatly reduced, the use of the resources is reduced, and the operation convenience of a client can be improved under the working condition that the charging current is the same as the prior art.

The invention discloses a visible light and near-infrared light switching mechanism based on electromagnetic driving. The visible light and near-infrared light switching mechanism comprises a base, alight filtering assembly arranged at the lower part of the base and an electromagnetic driving assembly arranged at the upper part of the base; the light filtering assembly comprises a visible light filter, a near-infrared light filter, a light filter seat and a pin; and the electromagnetic driving assembly mainly comprises a coil seat, a swing rod and a coil. According to the visible light and near-infrared light switching mechanism based on electromagnetic driving provided by the invention, an electromagnetic driving mode is adopted, and by changing the positive electrode and the negative electrode of the current input into the coil, the electromagnetic field magnetic pole directions are switched; when the direction of the electromagnetic field magnetic pole generated by the coil is opposite to the magnetic pole direction of a magnet, the magnetic field drives the swing rod to rotate, and the switching of the visible light filter and the near-infrared light filter is driven, so thata visible light working mode or the near-infrared light working mode can be switched. By virtue of the electric signal control based on electromagnetic driving, the power consumption of the system islowered, the reliability is enhanced, the light filters are rapidly switched, and the actual combat reaction capacity is improved.

The invention discloses an agrypnia hypnosis pillow for medical care. The agrypnia hypnosis pillow for the medical care comprises a shading hood, a pillow and a neck pillow. The bottom of the pillow body is provided with an assistant magnet therapy mat. The upper end of one side of the assistant magnet therapy mat of magnet therapy beads is provided with the pillow. The pillow is formed by a pillow air hole and spherical massage particles, and a moxa stick smoke output tube and cone massage particles. Two sides of the pillow are rotatably provided with the shading hood through a rotation damper. One side of the pillow is provided with the neck pillow, and the pillow is communicated with the neck pillow through the moxa stick smoke output tube. Two sides of the pillow are symmetrically provided with two moxa box bases. The interior of each of the moxa box bases is provided with a moxa box. A smoke through hole is communicated with a smoke connecting tube. The agrypnia hypnosis pillow for the medical care is provided with the assistant magnet therapy mat, and the upper side of the part, contacting with the human body, of the assistant magnet therapy mat is provided with the magnet therapy beads in a circular array. The blood circulation is conveniently improved through the action of the magnet therapy beads, and the organism immunity and liveness of a user are improved, so the therapy is assisted and the insomnia symptoms of the user are improved.

The invention discloses a reel, a parking control system and a vehicle comprising the parking control system. A line slot is formed in the reel; the line slot is arranged around a rotation axle of the reel; the line slot is provided with a starting end and a termination end; the line slot comprises a first arc-shaped line slot; the first arc-shaped line slot is arranged to be in the shape of involute; the distance between the bottom wall of the first arc-shaped line slot and the rotation axle of the reel is gradually decreased in the direction from the starting end to the termination end. According to the embodiment of the invention, the first arc-shaped line slot in the shape of involute is arranged, so that the parking control lever ratio can be gradually changed, a driver can perform controlling more lightly and smoothly, and the operation intensity of the driver is alleviated.

The invention relates to kitchen appliances, in particular to a soybean milk machine. The machine comprises a cup body, the cup body is characterized by comprising a cup body base and a cup body shelldisposed outside the cup body base, an interface interaction portion protruding outward is arranged on the cup body shell, an interface interaction region is formed outside the interface interactionportion, and an accommodating cavity for accommodating a circuit board is formed inside the interface interaction portion. Compared with the prior art, the machine provides more convenience for consumers to observe and use the soybean milk machine, a machine head is liberated for the soybean milk machine with a motor arranged on the upper portion, no control device is needed inside the machine head, the space inside the machine head is reduced, the thickness of the machine head can be further reduced, the weight of the whole machine is correspondingly reduced, and elderly and children can moreconveniently lift the machine head.

The invention discloses an ultralight sole material. The ultralight sole material is prepared from raw materials in parts by weight as follows: 30-40 parts of isoprene rubber, 30-40 parts of polybutadiene, 20 parts of an EVA (ethylene vinyl acetate copolymer) foaming material, 5-8 parts of fumed silica, 1-2 parts of nano-zinc oxide, 2-3 parts of a microporous physical foaming agent, 1-2 parts of an anti-aging agent and 1-2 parts of an active agent. By means of the characteristics that the volume density / ratio of the ultralight sole material is 0.95 or lower, the ultralight sole material floats on the water surface completely, the portability of the sole material is improved, the original wear resistance and non-slip performance of rubber can be guaranteed, and the resilience comfort is improved.

The invention provides a building formwork, relates to the technical field of building materials, and mainly solves the technical problem that in the prior art, a building formwork is poor in wear resistance and poor in fireproof performance. The building formwork comprises wear-resistant layers and a base layer, wherein the wear-resistant layers are positioned on the upper surface and the lower surface of the base layer; each wear-resistant layer comprises a wear-resistant surface and a reinforcing surface; each reinforcing surface comprises a channel and collateral layer; each channel and collateral layer is positioned on the surface, which is close to the base layer, of the corresponding wear-resistant layer; and each wear-resistant surface is positioned on the surface, which is away from the base layer, of the corresponding wear-resistant layer. The base layer is positioned between the wear-resistant layers, friction and / or scratching between the outside and the base layer can be prevented effectively, furthermore, the base layer can be isolated from a heat source of the outside by the wear-resistant layers, the base layer is prevented from being in direct contact with a fire source, and the fire resistance of the building formwork is improved. Each channel and collateral layer is close to the surface, which is close to the base layer, of the corresponding wear-resistant layer, the wearing capacity of the wear-resistant layers can be improved, and thus, the service life of the building formwork is prolonged.

The invention provides a test system. The test system comprises a plurality of main chain nodes, a plurality of parallel chain nodes and a reverse proxy server. The reverse proxy server is provided with a third port, and the third port is used for being accessed by the parallel chain nodes so as to obtain data information of the main chain nodes through the reverse proxy server; The parallel chainnodes are provided with test modules; The test module is used for executing test cases, the test cases can cover various test scenes and independent scenes matched with main chain parallel chains, such as main node downtime switching, parallel chain transparent scenes, main node bifurcation influence scenes on the parallel chains and the like, and on the basis of reducing the test cost, the testcan be used for continuous integration test of software products.

The invention provides a commercial vehicle electric hydraulic power steering device. The device comprises a steering oil tank, a steering engine, an electric steering pump and a controller; the steering oil tank is communicated with an oil inlet of the electric steering pump through an oil inlet pipeline, an oil outlet of the electric steering pump is communicated with an oil inlet of the steering engine through a high pressure pipeline, an oil outlet of the steering engine is communicated with the steering oil tank through a low pressure pipeline, the electric steering pump is electrically connected with the controller through a control circuit, and the controller is connected with a full vehicle CAN bus and the controller through a CAN bus connecting circuit and a high voltage connecting circuit respectively. Accordingly, the device is suitable for electric commercial vehicles, the steering control effect is good, the controllability is high, the installation space is large, an electric hydraulic power steering pipeline is applicable to the electric commercial vehicle, vibration can be effectively avoided, and the cooling effect is good.

The invention relates to a bi-directional thrust rolling bearing which comprises a shell assembly, a shaft washer, a cylindrical roller, a retainer, a race and a roller pin. The shell assembly comprises an upper shell and a lower shell. The upper shell comprises a large barrel, a large-end circular ring, a small barrel and a small-end circular ring. The large barrel and the small barrel are connected into an integrated structure through the large-end circular ring. The small-end circular ring is arranged at the end, opposite to the large-end circular ring, of the small barrel. The shaft washer, the cylindrical roller, the retainer and the race are all arranged in the space defined by the large barrel and the large-end circular ring. The roller pin is arranged in the space defined by the race, the small barrel and the small-end circular ring. According to the technical scheme, the bi-directional thrust rolling bearing comprises the shaft washer, the cylindrical roller, the retainer, the race, the shell assembly and the roller pin, and therefore the bearing can bear large radial stress and can also bear large axial stress; and a maintenance-free structure is added, the maintenance cost spent when vehicles are used is reduced, the vehicle using efficiency is improved, installation is convenient, and reliability is improved.

The invention belongs to the technical field of power generation, and discloses an electromagnetic power generation device based on human body kinetic energy. According to the invention, human body motion analysis is used; relative size parameters of a non-balanced rotor in a power generation device are determined according to the relevant information of the position of the power generation deviceto be arranged by limbs; according to the electromagnetic damping information of a coil in a load state, specific parameters of the rotor coil are adjusted to ensure that the amplitude energy of a human body motion part can drive the non-balanced rotor to continuously make circular rotating motion; and three-dimensional static and transient simulation modules of an Ansoft three-dimensional moduleare used to carry out simulated analysis on parameters output by a model to verify the electromagnetic power generation device based on human body kinetic energy. According to a system, a stator permanent magnet is embedded on a stator base; a rotor base is arranged above the stator permanent magnet; a coil iron core is embedded on the rotor base; and a coil winding is wound on the coil iron core. According to the invention, the electromagnetic power generation device based on human body kinetic energy has the advantages of small size and light weight, and is easily combined with human body parts to collect energy generated by human body motion and convert the energy into electric energy.

The invention discloses a multifunctional anti-dropping hanger supporting rod and an operating method thereof. The hanger supporting rod comprises a U-shaped hanger supporting hook, a connecting member I, a connecting member II and a supporting rod body, the upper end of the supporting rod body is fixedly sleeved with one end of the connecting member II, and the other end of the connecting memberII and the bottom of the first connecting member I are fixedly connected with a rubber ring through special-shaped inserting pins; the top of the connecting member I is movably connected with the U-shaped hanger supporting hook through a connecting shaft, and the U-shaped hanger supporting hook is capable of automatically rotating relative to the connecting member I. According to the multifunctional anti-dropping hanger supporting rod, the state of the hanger supporting rod can be adjusted according to actual demands, and the hanger supporting rod is used for collecting and hanging clothes from high positions when the connecting member I and the connecting member II are in a working state I in which the connecting members I and II are on the same line with the supporting rod body; the supporting is used for collecting and hanging clothes from the positions out of a window when the the hanger supporting rod is in a working state II where the connecting member I is perpendicular to the connecting member II; an anti-slip rubber holding bar arranged on the hanger supporting rod can provide better gripping performance and anti-slip performance; a rubber tail cap ensures that the hangersupporting rod does not easily slip on the floor, and convenience is provided for users.

The invention discloses a heavy hinge, and belongs to the technical field of hardware. The heavy hinge is used for connecting two components needing to be opened and closed. The heavy hinge comprisesa bottom plate, a supporting arm, a short connecting plate and a long connecting plate, the bottom plate is used for being connecting with one of the two components, the supporting arm is connecting with the other component, the short connecting plate and the long connecting plate are used for connecting the supporting arm and the bottom plate, the first end of the short connecting plate is hingedto the supporting arm to form a first supporting arm hinge point, the second end of the short connecting plate is hinged to the bottom plate to form a first bottom plate hinge point, the first end ofthe long connecting plate is hinged to the supporting arm to form a second supporting arm hinge point, the second end of the long connecting plate is hinged to the bottom plate to form a second bottom plate hinge point, a first spacing is arranged between the first supporting arm hinge point and the second supporting arm hinge point, and a second spacing is arranged between the first bottom platehinge point and the second bottom plate hinge point. According to the heavy hinge, opening and closing of the hinge are achieved through a rotating structure; and compared with a sliding support in the prior art, the smoothness, the portability and the workability of a switch are enhanced, and the bearing capacity is improved.

The invention discloses AR glasses, which comprise a glasses frame provided with a display module; a first glasses leg which is provided with a first connecting end and a first free end, wherein the first connecting end is connected with one end of the glasses frame, and a first contact electrically connected with the display module is arranged on the outer side wall of the first glasses leg; a second glasses leg which is provided with a second connecting end and a second free end, wherein the second connecting end is connected with the other end of the glasses frame; and a first functional assembly which is provided with a second contact, and detachably connected with the first glasses leg; and when the first functional assembly is connected with the first glasses leg, the second contactis electrically connected with the first contact, so that the AR glasses control the first functional assembly. According to the AR glasses provided by the invention, when a user does not need to usethe first functional assembly, the first functional assembly can be directly detached from the first glasses leg, so that the portability of the AR glasses can be improved, and the use comfort and convenience of the user are improved.

The invention relates to a height adjusting device, in particular to a horizontal automatic correction dynamic height variable adjusting device. A plurality of horizontal automatic correction dynamicheight variable adjusting devices are combined to form a height-adjustable platform capable of automatically keeping horizontal, and a horizontal temporary working platform can be built on uneven terrains. Meanwhile, when the device is applied to a chassis of a vehicle (especially a low-speed special vehicle), the height of the vehicle chassis can be adjusted at will, the trafficability of the vehicle chassis and the adaptability to a working site are greatly enhanced. A main body comprises an air cylinder, a piston, a linear bearing, a polished shaft, an electromagnetic air valve, a horizontal gyroscope, a height sensor and an electric comprehensive control module, and the structural combination relation is shown in the attached drawing. In the device, the piston is fixed at one end of the polished shaft and can freely slide in the air cylinder, the other end of the polished shaft penetrates through the linear bearing and is fixed on a chassis platform, and the upper part of the air cylinder is connected with the lower part of the linear bearing. Air intake and air exhaust of the air cylinder are controlled by the electromagnetic air valve, and the electromagnetic air valve is controlled by the electric comprehensive control module through coordination of the horizontal gyroscope and the height sensor to achieve the functions of automatic horizontal correction and dynamic height variable adjustment of the device through air intake and air exhaust control over the air cylinder.

The invention discloses an instance retrieval method based on a deep activation salient region, and relates to visual instance retrieval. The method comprises the following steps: 1) performing modeldesign: a model comprises a forward propagation module, a mode positioning module and a feature extraction module; 2) for a given image database, taking each picture in the database as the input of the model, and extracting an output instance positioning result and a corresponding instance-level feature; 3) for each query picture, taking the query picture as input of a forward propagation part ofa depth mode mining module, extracting regional instance features, and performing similarity comparison on the instance features and all instance-level features extracted from the database picture bythe model to obtain a similarity comparison result; wherein the area with the highest similarity in each database picture is the result of instance retrieval on the picture, the similarity corresponding to the area is the similarity of each picture, all pictures in the database are sequentially arranged from high to low according to the similarity, and the result of instance retrieval of the wholedatabase is obtained. The invention can be applied to intelligent retrieval and video editing of video media.