45results about How to "Narrow width" patented technology

A solar cell includes a cell substrate, a plurality of collector electrodes, a plurality of bus electrode segments, and a plurality of columns of interconnects. The battery substrate has a target surface. The current collection electrodes are arranged on the target surface, extend in the first direction and are distributed at intervals in the second direction intersecting with the first direction. The bus electrode section is located on the target surface and extends in the second direction. And each row of interconnection parts extend along a second direction, and the interconnection parts are arranged on the current collection electrodes. The bus electrode section extends in the second direction and is located in the upper end edge area and / or the lower end edge area of the target surface. On the target surface, the number of the bus electrode sections is smaller than two times of the column number of the interconnection parts, and / or the length of at least one bus electrode section is smaller than or equal to 5.3 mm, and / or the weighted average width of at least one bus electrode section is smaller than or equal to 0.29 mm. And by reducing the number of the bus electrode sections, the current collection electrode can collect current carriers to the maximum extent, and the conversion efficiency of the battery is improved. The utility model also provides a photovoltaic module comprising the solar cell.

The invention relates to the technical field of photovoltaics, and discloses a TBC battery structure capable of automatically forming gap areas and a PVD preparation method thereof.The TBC battery structure comprises a silicon substrate, p + areas and n + areas are arranged on the back surface of the silicon substrate, the height positions of the p + areas and the n + areas on the back surface of the silicon substrate are staggered to form steps, and the steps are arranged on the back surface of the silicon substrate. A gap region is formed on the side wall of the step connecting the p + region and the n + region, and the gap region is used for electrically isolating the p + region and the n + region; the p + region comprises a first tunneling oxide layer, a p-poly layer, a second tunneling oxide layer and an n-poly layer which are sequentially deposited on the silicon substrate; and the n + region is provided with a second tunneling oxide layer and an n-poly layer which are sequentially deposited on the silicon substrate. According to the invention, the p-poly is superposed with the n-poly to form the tunnel junction, so that the n-poly on the p-poly can be directly prevented from being removed by using the second laser, the damage of the laser to the crystalline silicon layer on the surface is avoided, meanwhile, a laser grooving process is reduced, and the production cost is greatly reduced.

The invention provides a pier top connecting structure of a composite structure bridge based on steel and concrete and a construction method. A cross beam pouring area is formed between the ends of every two adjacent standard simply-supported units, and end steel plates, second shear nails, second tooth keys and fourth bridge floor post-pouring areas are arranged on composite beams participating in butt joint in the standard simply-supported units; a plurality of second tooth keys are arranged on the end face, close to the cross beam pouring area, of the concrete rib plate, a fourth bridge deck post-pouring area is located at the end, close to the cross beam pouring area, of the bridge deck slab, an end steel plate is arranged at the end, close to the cross beam pouring area, of the steel beam, and a plurality of second shear nails are arranged on the face, away from the steel beam, of the end steel plate; reinforcing steel bars are arranged in the cross beam pouring area and the fourth bridge floor post-pouring areas of the two adjacent standard simply-supported units, and concrete is poured together in the cross beam pouring area to form a connecting cross beam. The problem that a traditional simply-supported variable continuous structure cannot adapt to system conversion between composite beams in a multi-material composite web form is solved.

The invention discloses a chain type centered driving structure which mainly comprises a motor, lead screws symmetrically arranged on the left side and the right side of the motor, a driving block, a first chain and a first chain wheel. According to the scheme, the double-head motor is arranged in the middle and synchronously drives the lead screws arranged on the left side and the right side. And the driving blocks connected with the screw rod move in the same direction or back to back direction under the rotation of the screw rod. When the two driving blocks move in the opposite directions, the movable window sash connected with the first chain is pulled by the first chain wheel to slowly ascend, and therefore window closing operation is achieved. When the two driving blocks move back to back, the movable window sash is driven by the first chain and the first chain wheel to descend slowly, and therefore window opening operation is achieved. The device has the advantages of being simple in structure, convenient to operate and easy to implement.

The invention discloses an LED packaging structure and a COB light source, the LED packaging structure comprises a metal substrate, the upper surface of the metal substrate is provided with a BT layer, the center of the BT layer is provided with a light-emitting area, the BT layer is provided with a first box dam and a second box dam which surround the light-emitting area in a stacked mode from bottom to top in sequence, the first box dam is white glue, the diameter of the first box dam is the same as that of the second box dam, and the diameter of the second box dam is the same as that of the first box dam. The inner side of the first box dam and the inner side of the second box dam are filled with fluorescent glue layers, and the fluorescent glue layers are located above the light-emitting area. According to the COB light source, the LED packaging structure is adopted, the air tightness is further enhanced, the problems of light attenuation, aging, fluorescent powder blackening and the like are solved, the overall dam width is smaller than the width of a single-layer dam for achieving the same dam height, the area of a small light-emitting area can be occupied, a larger light-emitting area can be achieved, and the product performance is improved.

The invention provides a wheel cover structure. A wheel house structure (100) is provided with: an arc-shaped wheel house outer panel (10) having a lower end (11) protruding upward; a side member outer plate (20) which has an arc-shaped portion (21) at the lower portion thereof, is connected so as to overlap the outer side of the wheel housing outer plate (10) in the vehicle width direction, and constitutes the side surface of the vehicle (200); and an arch-shaped molding (40) that covers an end region (23) of the arc-shaped section (21) from the outside in the vehicle width direction, the arch-shaped molding (40) being joined to the end region (23) by a clip, the arch-shaped molding (40) being provided with: an adhesive section (60) that adheres the lower end section (11) and the arc-shaped section (21) in a watertight manner above the joining point of the clip; and a sealing part (68) which is coated with a sealant along an overlapping boundary line between the arc-shaped part (21) and the lower end part (11) between the bonding points of the bonding part (60) and the clamp (50).

The utility model discloses a battery and electronic equipment, the battery includes: a plurality of electrical cores, the plurality of electrical cores are connected in series, each of the plurality of electrical cores includes: a positive pole connecting portion and a negative pole connecting portion, in the two adjacent electrical cores connected in series, the positive pole connecting portion of one electrical core is arranged adjacent to the negative pole connecting portion of the other electrical core, and the negative pole connecting portion of the other electrical core is arranged adjacent to the positive pole connecting portion of the other electrical core. And in the two adjacent battery cells which are connected in series, the positive electrode connecting part of one battery cell and the negative electrode connecting part of the other battery cell are electrically connected to the same first conductive sheet. According to the battery metering chip, the positive electrode connecting part of one battery cell and the negative electrode connecting part of the other battery cell in the two adjacent battery cells connected in series are close to each other and are connected to the same first conducting strip, so that a diversion path can be shortened, line impedance and voltage drop are reduced, heat generation is reduced, and the sampling precision of the battery metering chip is improved; the battery cruising ability can be improved, and the battery cost is reduced.

The invention relates to the field of photovoltaic technology, and discloses a back contact solar cell structure and a preparation method thereof, the back contact solar cell structure comprises a silicon substrate, the back surface of the silicon substrate is provided with a p-type region and an n-type region, and the height positions of the p-type region and the n-type region on the back surface of the silicon substrate are mutually staggered. According to the invention, the spacing structure, the n-type heavily doped region and the p-type heavily doped region are arranged in the vertical longitudinal mode, so that the n-type heavily doped region and the p-type heavily doped region are separated and staggered in the longitudinal height, the width occupied by the gap region in the transverse direction is greatly reduced, the width of the transverse n-type heavily doped region and the width of the transverse p-type heavily doped region are widened to the maximum extent, and the width of the gap region is increased to the maximum extent. And meanwhile, the n-type heavily doped region and the p-type heavily doped region are isolated, so that the electric leakage of the battery is reduced, and higher battery conversion efficiency is obtained.

The utility model discloses a multi-station pipe penetrating device which comprises a rack, a first positioning structure, a second positioning structure and a third positioning structure, the first positioning structure comprises a first mounting arm, a first driving assembly and at least two first positioning assemblies used for positioning the head end of a connecting sleeve; the second positioning structure comprises a second mounting arm, a second driving assembly and at least two second positioning assemblies used for positioning the head end of the connecting inner pipe. The third positioning structure comprises a third mounting arm and at least two third positioning assemblies arranged on the third mounting arm and used for positioning the tail end of the connecting inner pipe. The sleeve can be arranged outside the third positioning assembly in a sleeving mode and move towards the machine body in the direction away from the machine head along with the first positioning assembly so that the inner pipe can be arranged in the sleeve in a penetrating mode. According to the multi-station pipe penetrating device, pipe penetrating operation of at least two sets of inner pipes and sleeves can be completed at a time, the pipe penetrating efficiency is greatly improved, and the time cost invested by water pipe manufacturers is reduced.

The invention discloses a near-field sound focusing and directivity control system of a multichannel parametric array loudspeaker, which comprises a signal source module, a signal adjusting module, a signal modulation module, a signal amplification module and a parametric array loudspeaker, and is characterized in that the signal source module generates an original audio signal, the signal adjusting module adjusts the original audio signal, and the signal amplification module amplifies the original audio signal; the multi-channel focusing audio signal generation module generates multi-channel focusing audio signals, the signal modulation module modulates the multi-channel focusing audio signals to ultrasonic carrier signals to generate multi-channel ultrasonic modulation signals, and the signal amplification module carries out power amplification on the ultrasonic modulation signals and then correspondingly outputs the ultrasonic modulation signals to a plurality of sound production channels of the parametric array loudspeaker. And driving the plurality of sounding channels to focus and sound to the focus. The invention provides a near-field sound focusing control scheme of a parametric array loudspeaker, which is suitable for near-field focusing of the parametric array loudspeaker with large channel spacing and has a better side lobe suppression effect.

The invention provides a variable-arrangement large-working-resistance ultrahigh advanced hydraulic support, and belongs to the technical field of large-mining-height roadway supporting, the variable-arrangement large-working-resistance ultrahigh advanced hydraulic support comprises a front frame, three middle frames are arranged at the top position of the front of the front frame through connectors, a rear frame is arranged at the bottom position of the front of the middle frame through a connecting assembly, and the front of the rear frame is connected with the front of the front frame through a connecting assembly. Generally, the group of supports are arranged and combined through the pushing beams, the connecting assemblies, the connectors and the pushing jacks in a front-single-back-double mode, the supports are moved front and back through hydraulic force of the pushing jacks, and when the stress of a roadway changes, the double-row supports in the last row can be changed into the single-row supports according to the supporting condition needed by the roadway, so that the supporting efficiency is improved. And five groups of brackets can be changed into six groups of brackets, so that the width is narrowed, the transportation is convenient, the bracket can be suitable for roadway surrounding rock environments under different conditions, the purpose of effectively protecting personnel and equipment is achieved, and the purpose of convenient transportation and installation can also be achieved according to different permutation and combination.

The invention discloses corn ditching equipment capable of regulating and controlling soil moisture, and belongs to the technical field of agricultural equipment.The corn ditching equipment structurally comprises a driving control box, a rotary digging ditching wheel and two crawling driving arms, the rotary digging ditching wheel is arranged at the rear end of the driving control box, the two crawling driving arms are installed at the bottom of the driving control box in a sliding mode, and a plurality of rotary digging teeth are arranged on the peripheral side of the rotary digging ditching wheel; two positioning piles capable of being inserted into the ground are vertically mounted on the two crawling driving arms in a sliding manner, and the driving control box is connected with the rotary digging ditching wheel through a fixing seat and a traction frame; the equipment is small in size, has the capability of flexibly shuttling between rows of crops, and can execute furrow digging and forming operation; the operation process is not influenced by existing crops on the earth surface, and the furrows are dug in time, so that the air permeability of soil can be effectively improved, the absorption of roots of the crops on moisture and nutrients is promoted, the moisture regulation and control capability of the furrows of a crop planting field is recovered, and sudden drought climate is coped with.

The utility model discloses a compact actuator, and relates to the technical field of automobile spare parts. When the compact actuator is used, a stator and a rotor are matched to drive an output shaft to rotate, and the output shaft is connected with a driving air inlet grille to drive blades to move; the three winding magnetic poles are arranged in the sunken mounting grooves in the bottom of the inner side of the shell, so that the local thickness of the shell is increased, the thickness of the other parts can be reduced, the internal space of the shell is smaller, the utilization rate is higher, meanwhile, the three mounting grooves are arranged, a positioning effect can be achieved when the stator is mounted, and the assembling convenience is improved; and the included angle between the M and the N is 60 degrees, so that the width of the stator in the M direction is narrower, and the length of the required shell is reduced.

The utility model discloses an electric forklift overhead guard for a refrigeration house, and particularly relates to the technical field of forklift overhead guards, which comprises an overhead guard main body, a left lamp bracket, a right lamp bracket, a protective net assembly and a water baffle, the overhead guard body comprises a left front leg, a right front leg, a left rear leg, a right rear leg and a top frame, the water baffle is fixedly installed on the inner side of the top frame, the left lamp holder and the right lamp holder are fixedly installed on the inner side of the left front leg and the inner side of the right front leg respectively, and the front supporting leg is fixedly connected with the right supporting leg through the protective net assembly. The protective net welding piece is installed at the front end of the overhead guard main body, so that goods are prevented from falling off and hurting a driver during stacking operation, and the safety is improved; the left lamp holder structure and the right lamp holder structure are redesigned, a front lamp of the forklift is installed on the inner side of the overhead guard body, the width of the whole forklift is narrowed, and trafficability is improved. The front end is protected by the protective net welding piece, so that the front lamp is prevented from being collided and damaged; therefore, the forklift is convenient to operate and suitable for small-tonnage forklifts.

The utility model relates to the technical field of LEDs, in particular to an LED packaging structure, an LED module and electronic equipment, the LED packaging structure comprises a substrate, an LED chip, a fence and a reflecting piece, the LED chip is arranged on the substrate, the reflecting piece is arranged on one side, far away from the substrate, of the LED chip, and the fence is arranged around three side surfaces of the LED chip. The LED packaging structure provided by the utility model directly emits light from the unsealed side surface of the LED chip so as to realize side light emitting, and the light emitting does not need to be performed by arranging a front surface or side surface light guide structure, so that the structure size is reduced, the size of the LED packaging structure is narrow and thin, and the corresponding size index requirements of lightening and thinning of electronic equipment are fully met.

The utility model discloses an aluminum integral pipe type scooter frame and scooter, the frame includes frame pipe and rear fork, the frame pipe is set to the hollow aluminum pipe of integral type, and is bent and set to form the vertical part and horizontal part of intercommunication, and the tail end of horizontal part is welded with rear fork, the top surface of horizontal part is short of a piece, forms the strip-shaped gap, and horizontal part becomes horizontal cover pipe, and the battery can be detachably placed into horizontal cover pipe through the strip-shaped gap, and the below and both sides welding of horizontal part strengthen the seat, the utility model discloses a scooter frame has the advantages such as harmony of modelling, simple structure, lightweight design, stable structure, high strength, cheapness etc.

The utility model discloses a novel narrow edge hand washing basin, including the basin body, the top surface rear side of basin body is provided with rear plane, be provided with faucet mounting port on the rear plane, the outside rear part of basin body is provided with two convex parts, and the two convex parts of basin body rear part are symmetrically arranged at the left side and the right side of faucet mounting port, and the two convex parts can enhance the mechanical strength of basin rear wall, and when installing, the threaded pipe section of faucet passes through faucet mounting port from top to bottom, and is connected and is installed with connecting nut, connecting water pipe and the like connecting pipe fittings below faucet mounting port, because the two convex parts are located at left and right sides, and the convex part does not hinder the connecting pipe fitting, compared with the traditional hand washing basin, can significantly reduce the distance of basin and wall, thereby making the rear plane narrow, can reduce the width of hand washing basin whole under the condition of keeping the existing basin capacity, to satisfy the demand of small area bathroom, or under the condition of keeping the overall width of hand washing basin, increase the volume of basin.

The utility model provides a human body detection device, which comprises a detection main body and a mounting part, and the mounting part is connected to the detection main body. Wherein the mounting part comprises a first side wall, an abutting structure and at least two elastic arms, and the abutting structure protrudes out of the first side wall; the elastic arm extends out based on the first side wall, and the elastic arm is configured to be an elastic sheet. The human body detection device provided by the utility model is simple and convenient in installation process and is safer.

The invention discloses a near-field sound focusing and directivity control method for a multichannel parametric array loudspeaker, and the method comprises the steps: S1, carrying out the signal adjustment of an original audio signal, and generating a plurality of channels of focusing audio signals for focusing; s2, modulating the focusing audio signal of each channel to an ultrasonic carrier signal to generate a plurality of focusing audio signals; s3, performing power amplification on the ultrasonic modulation signal of each channel; and S4, correspondingly driving a plurality of sound production channels of the parametric array loudspeaker by adopting the ultrasonic modulation signals of the plurality of channels subjected to power amplification, so that the plurality of sound production channels focus and produce sound towards a focus in a near field, and the distance between two adjacent sound production channels of the parametric array loudspeaker is smaller than or equal to the wavelength of the audio signal. The invention provides a near-field sound focusing control scheme of a parametric array loudspeaker, which is suitable for near-field focusing of the parametric array loudspeaker with large channel spacing and has a better side lobe suppression effect.

The invention belongs to the technical field of display, and discloses a color conversion optical filter which comprises a transparent substrate, the upper side of the transparent substrate is divided into a plurality of pixel point areas, grooves are formed in the positions, corresponding to the boundaries of the pixel point areas, of the upper surface of the transparent substrate, the grooves are filled with conductive materials, and metal isolation walls are arranged on the upper surfaces of the conductive materials. The metal separating walls are used for surrounding the corresponding pixel point areas, and red, green and blue quantum dots or fluorescent powder materials are placed in the pixel point areas. The color conversion optical filter prepared by the method is high in light emitting efficiency and high in resolution ratio, and has great application prospects in display panels. And meanwhile, the method has the characteristics of low manufacturing cost and high process compatibility, does not need a high-cost mask plate in the photoetching process, and can be suitable for large-size roll-to-roll manufacturing.

The utility model discloses a sucking disc for a photovoltaic cell and photovoltaic production equipment with the same, comprising an adsorption body, the adsorption body is provided with a main adsorption port communicated with an air source and an attaching surface for attaching the photovoltaic cell, the attaching surface is provided with an adsorption flow channel radially extending from the center to the peripheral side, and the adsorption flow channel is communicated with the main adsorption port. Gas flowing along the adsorption flow channel is suitable for adsorbing a photovoltaic cell; and the valve element is installed in the center of the adsorption body, the valve element is provided with a valve channel, and the valve channel is communicated with the main adsorption opening and the adsorption flow channel. According to the embodiment of the utility model, the sucker for the photovoltaic cell has the advantages of uniform and stable adsorption force, small gas consumption, good protection for the photovoltaic cell and the like.

The invention relates to the technical field of thin-film capacitors, in particular to a three-level thin-film capacitor and a manufacturing process thereof, which not only can meet the requirement of high capacity required in a high-power inverter, but also can reduce space occupation in an inverter module and facilitate installation, and comprises a capacitor shell and a capacitor core, the capacitor core comprises three core groups which are arranged in the same capacitor shell, each core group is composed of two groups of cores which are connected in parallel, two ends of each core group are fixedly connected with welding copper plates, the welding copper plates are connected with busbars provided with electrode through holes, extraction electrodes penetrate through the electrode through holes, and the extraction electrodes are connected with the busbars. The core is a flat core formed by winding a metalized film.

The utility model discloses a detachable battery's scooter, detachable battery's scooter includes frame pipe, battery, front fixed seat, battery lock, rear fixed seat and terminal, frame pipe hollow setting and top are equipped with the strip gap and form the cover pipe of missing, and battery is detachably placed into the cover pipe of missing, and the both sides of battery are restricted by frame pipe pipe body, the top of battery is flush with the top of cover pipe of missing and no longer sets up frame pipe cover plate, and the front fixed seat is fixedly arranged in the inside of frame pipe front end, is used for with battery front end joint, is provided with battery lock on front fixed seat, and the key hole of battery lock is located frame pipe side, and the lock tongue of battery lock is inserted with battery front end and is limited to go up and down activity, and the rear fixed seat is fixedly arranged in the inside of frame pipe rear end, is used for with battery rear end joint, and is provided with terminal on rear fixed seat, and battery rear end is connected with terminal and supplies power. The utility model has the advantages of convenient battery dismounting, reliable fixation, coordinated modeling, simplified structure etc.

This invention provides a rotating shaft device, comprising a support mechanism, a first rotating assembly, and a driven assembly. The support mechanism includes a side support member. The first rotating assembly includes a positioning seat and rotating mechanisms disposed on opposite sides of the positioning seat. Each rotating mechanism includes a first rotating member, a second rotating member, and a connecting member. One end of the first rotating member is rotatably connected to the positioning seat, and the other end is rotatably connected to the connecting member. One end of the second rotating member is rotatably connected to the positioning seat, and the other end is rotatably connected to the connecting member. A first rotation axis between the first rotating member and the connecting member is parallel to a second rotation axis between the second rotating member and the connecting member. The driven assembly includes two driven members rotatably connected to opposite sides of the positioning seat. The end of each driven member away from the positioning seat is slidably connected to the side support member. The side support member and the connecting member are rotatably connected. This application also provides an electronic device equipped with a rotating shaft device.

The utility model provides a carbonatite and dolomite stratum oil well wire line coring tool, including drill stem, outer tube, inner tube, inner tube assembly, winch and fisher, drill stem bottom end is connected with outer tube, inner tube assembly is connected with inner tube top end, the free end of rope on winch is connected with fisher top end, outer tube bottom end is connected with PCD drill bit, and the outer tube bottom end is connected with the PCD drill bit. A through hole is formed in the central axis of the PCD drill bit, and the through hole is in butt joint with the rock core containing channel in the inner pipe; the PCD drill bit is provided with six straight blades, the width of each straight blade is 1 / 20-1 / 16 of the circumference of the PCD drill bit, each straight blade is provided with a plurality of cutting teeth, and on the same straight blade, the cutting teeth at the most front end are arranged on the end face of the bottom end of the through hole. The oil well wire-line coring tool for the carbonate rock and dolomite formations has the advantages of being high in drilling efficiency for the carbonate rock and dolomite formations, high in core yield rate for the unconsolidated sand shale of the Nadisk group and capable of being suitable for deep coring operation.

The present application relates to a shower head heater and a substrate processing apparatus, and more particularly to a shower head heater and a substrate processing apparatus that can perform etching and post-processing steps of a substrate in a single chamber when performing a dry etching process of a large area substrate. The shower head heater has a shower head plate formed with a plurality of through holes, and a printed heater provided on at least one of the upper surface and the lower surface of the shower head plate.

The present application relates to a pixel encapsulation display panel and a display device, the pixel encapsulation display panel includes: a functional layer, which includes a display area and a non-display area, and the display area includes a plurality of pixel areas; a first encapsulation layer, which covers the display area and the non-display area of ​​the functional layer; a plurality of annular retaining walls, the plurality of annular retaining walls are all arranged on the surface of the first encapsulation layer, the plurality of annular retaining walls correspond to the plurality of pixel areas one by one, and the annular retaining walls are arranged at the periphery of the pixel areas; a plurality of second encapsulation layers, the plurality of second encapsulation layers are all covered on the surface of the first encapsulation layer, and the plurality of second encapsulation layers are one by one in the plurality of annular retaining walls. The present application first uses the first encapsulation layer to fully cover and encapsulate the functional layer, and then uses the plurality of second encapsulation layers to separately encapsulate the plurality of pixel areas on the functional layer, so that the width of the non-display area required to be reserved for the functional layer can be designed to be narrower, which is reflected in the narrower edge width of the display panel.

The utility model provides a kind of narrow frame display panel and display module, wherein display panel includes display unit array, drive module array and substrate, display unit array includes several OLED structures, drive module array includes several drive module structures corresponding arranged in OLED structure bottom and project signal layer for connecting external input LVDS signal and external power supply arranged in drive module structure bottom, drive module structure includes the LVDS receiver for receiving external input LVDS signal, with the decoder for decoding external input LVDS signal for the communication connection of LVDS receiver, with the data storage for storing the display data after decoding for the communication connection of decoder, with the PWM generator for converting display data into PWM drive signal for the signal connection of data storage, and with the LED drive circuit for driving OLED structure for the communication connection of PWM generator, substrate is arranged in project signal layer bottom.

The invention belongs to the technical field of welding, and particularly relates to an oil and gas pipeline TIG automatic welding narrow gap welding method and application thereof. The method at least comprises root welding, wherein an ER80S-G solid welding wire is adopted for root welding; root welding is conducted through TIG welding; and a narrow-gap groove is adopted for root welding. According to the technical scheme, the welding efficiency can be greatly improved to meet the requirement for large-scale pipeline construction, high-quality welding seams are guaranteed to enhance the safety and reliability of the pipeline, the welding material cost is saved through the narrow-gap groove form, the labor intensity of welders is relieved, high-performance steel such as X80 pipeline steel is well matched, and high-quality safe operation of the pipeline is guaranteed.

The invention relates to the technical field of radar signal processing, in particular to a particle swarm optimization-based MTD filter design method, which comprises the following steps of: S1, obtaining a Doppler center frequency range and a normalized half width according to a radar type and a clutter type so as to obtain a constraint condition, obtaining filter information according to the constraint condition and the global pilot vector matrix; s2, designing a fitness function according to the nonlinear function and a hard coding threshold; and S3, designing a filter according to the fitness function, and iteratively updating the filter according to a main lobe width dichotomy to obtain optimal filtering. According to the method, the linear and nonlinear multi-parameter fitness function is constructed, so that the optimal design is realized on the premise of meeting the requirements of stopband attenuation, null depth and clutter band width. The main lobe width is subjected to dichotomy iterative optimization, so that higher robustness in different clutter environments is realized, the design efficiency of the MTD filter is improved, the main lobe broadening of the filter is reduced, and the gain loss of the filter is reduced.