56 results about "Laser channel" patented technology

The invention discloses an automatic driving laser radar simulation method for high-fidelity material modeling, and the method comprises the steps: carrying out the high-fidelity modeling of a complete physical process of a single laser channel, and designing a complete technical chain from laser beam modeling, material reflectivity modeling, light path modeling to post-processing. In laser beam modeling, energy space distribution is accurately depicted by introducing an angle attenuation conical beam model; in material reflectivity modeling, a bidirectional reflection distribution function system covering Lambert body, specular reflection, transmission, retroreflection and general materials is established; in light path modeling, traditional single reflection hypothesis is broken through, time-resolved Monte Carlo path tracking and kernel density estimation are adopted, simulation of multi-path reflection and transmission effects is achieved, traditional model bottlenecks are broken through, complex optical phenomena are simulated, the generation mode has expandability and controllability, rare key scenes are efficiently synthesized, and the method is suitable for large-scale popularization and application. And the method has wide field extension potential and high technical universality.

The invention provides an automatic mechanical arm device, and belongs to the technical field of mechanical arms, the automatic mechanical arm device comprises a multi-axis servo mechanical arm and a laser welding head, the laser welding head is connected with a gas generator, the laser welding head is connected with an air injection seat and a laser channel cylinder, the air injection seat is connected with an air cylinder, and the automatic mechanical arm device further comprises a pollution discharge assembly, the pollution discharge assembly is used for removing smoke dust attachments after welding in the air outlet cylinder; the throttling assembly is used for circularly absorbing part of gas; the device has the beneficial effects that active cleaning of smoke dust attachments on the inner wall of the air outlet cylinder is achieved through the pollution discharge assembly, external washing equipment is not needed, a traditional maintenance means is avoided, the stability of the drift diameter of an air path is maintained, it is ensured that protective gas is output uniformly, the welding accuracy and efficiency are improved, and the throttling assembly restrains diffusion of the protective gas through an umbrella-shaped throttling cover; and meanwhile, unpolluted redundant protective gas is recycled, and the consumption of the protective gas is reduced.

The utility model discloses a welding assembly and welding equipment, and relates to the technical field of welding, the welding assembly comprises a main body part and a crimping part, the main body part is an insulating part or the surface layer of the main body part is an insulating layer, the main body part comprises a first air channel and a second air channel, the first gas channel and the second gas channel are used for gas to flow in or flow out, and the main body piece comprises a first laser channel; the crimping part is of an integrated structure, the crimping part is an insulating part, and the crimping part comprises a second laser channel; the crimping part and the main body part are of a split type structure, the crimping part is detachably connected with the main body part, the crimping part is connected to the main body part, and the first laser channel is communicated with the second laser channel. And due to the structural design of detachable connection, the replacement and maintenance time is effectively shortened, the production efficiency is improved, the maintenance and replacement cost is reduced, and the universality of the main body piece is improved.

The invention discloses a laser cladding processing system, belongs to the technical field of laser cladding processing, and solves the technical problem of poor stability of existing laser cladding processing equipment. The device comprises a cladding head, an optical fiber laser, a water cooling machine and a control module, a shell is arranged at the top of the cladding head, a laser channel, a first-stage protection lens, a first-stage collimation lens, a second-stage focusing lens and a second-stage protection lens are arranged in the shell, the axis of the laser channel, the axis of the first-stage protection lens, the axis of the first-stage collimation lens, the axis of the second-stage focusing lens, the axis of the second-stage protection lens and the axis of the cladding head coincide, and the periphery of the first-stage collimation lens and the periphery of the second-stage focusing lens coincide with the axis of the cladding head. In the laser cladding machining process, the control module obtains the temperature of each cooling water channel and controls the cooling water flow of each cooling water channel, so that the first-stage collimating lens, the second-stage focusing lens and the cladding head all work at the optimal working temperature, and therefore the stability of laser cladding machining operation is guaranteed; and the laser cladding processing quality is ensured.

The invention relates to a device for laser welding of components (2, 3) with at least one laser beam emitter and at least one pressure piece (1), which - is designed to be pressed against at least one of the components (2, 3), and - has a laser channel (5) through which a laser beam (LS) emitted by means of the laser beam emitter can be guided onto a surface of at least one of the components (2, 3). According to the invention, in a wall (4) surrounding the laser channel (5) and forming its outer surface, at least one shielding gas channel (6.1 to 6.4) is formed in an inner section facing the laser channel (5), which can be supplied with a shielding gas (SG) and has at least one shielding gas outlet (SGA) that leads through the wall (4) into the laser channel (5). Furthermore, in the wall (4), at least one cooling channel (7) is formed in an outer section facing away from the laser channel (5), which can be supplied with a cooling medium (KM). The invention further relates to a method for laser welding of components (2, 3).

The invention relates to the technical field of laser cladding, in particular to a small inner hole laser cladding device which is characterized in that a tubular main body comprises a light inlet connector, a collimation module, a medium input module, an extension rod module, a focusing module and an output module which are sequentially connected from back to front; a laser channel penetrating front and back is formed in the tubular body, and the axis of the laser channel upwards deviates from the axis of the tubular body. A collimating lens, a protective lens I, a focusing lens, a protective lens II and a plane mirror are sequentially arranged in the laser channel from back to front, the protective lens II is arranged at the front end of the focusing module, and the plane mirror is arranged at the top of the output module; a protective gas hood is arranged at the front end of the output module, the protective gas hood is of a front-back through cylindrical structure, the rear end of the protective gas hood is communicated with the laser channel, and the front end of the protective gas hood inclines downwards; and the laser beam is transmitted to the plane mirror through the laser channel and then can be emitted from the protective gas hood. The distance between the plane mirror and the molten pool is increased, and the damage probability of the plane mirror is reduced.

The application provides a multi-channel holmium laser cooperative output control method and system for high-power holmium laser equipment, which comprises the following steps: determining the feasibility of the emission of each laser channel in the next pulse period based on the target pulse parameters of the current treatment mode and the real-time state data of the multi-channel laser, to obtain candidate available channels; determining the current emission channel based on the historical working data, energy feedback data and real-time electrical state of each channel in the candidate available channels; adjusting the timing parameters of the laser trigger signal based on the state recovery requirements of the current emission channel, the optical path switching time consumption and the inherent delay of the system, to obtain a synchronous trigger instruction; and triggering the current emission channel to perform laser pulse emission after confirming the optical path alignment based on the optical path switching mechanism in response to the synchronous trigger instruction, and updating the energy feedback data based on the energy deviation of the current laser pulse emission. The application guarantees the accuracy and reliability of clinical treatment.

The utility model discloses a handheld laser welding gun, which belongs to the technical field of laser welding and comprises a gun body and a laser channel in the gun body, one end of the laser channel is connected with a gun head, one end of the laser channel is connected with a laser collimation module, and an optical fiber is connected with one end of the laser collimation module; incident light sequentially passes through the laser collimation module, the laser reflecting mirror, the collecting mirror and the gun head. The shell is detachably mounted at the bottom of the gun body; the galvanometer motor is fixed to the gun body and located in the shell. The protective glass is detachably mounted in the gun body; the airflow channel is used for being connected with an air pump to blow air to the gun head and dissipate heat in the welding gun; the control panel is located in the shell; and the button module is embedded on the shell. Compared with an existing laser welding gun with a reflector adjusting function, the handheld laser welding gun has the advantages that the control panel of the motor is integrated into the cavity, and the problem of interference of control signals of the motor can be effectively solved.

A medical water jet cutter system. The medical water jet cutter system is provided with an insertion portion (12) and a handle portion (11) connected to the near end of the insertion portion (12), and the medical water jet cutter system comprises a water jet cutter assembly, a laser assembly, and a suction control assembly. The water jet cutter assembly comprises a water jet cutter channel (101) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output a jet. The laser assembly comprises a laser channel (201) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output laser energy. The suction control assembly comprises a suction channel (401) penetrating through the insertion portion (12) and the handle portion (11) and is configured to suck a fluid. The medical water jet cutter instrument combines water jet cutter technology and laser technology and enables the resection of prostate tissue without thermal damage while achieving hemostasis. In addition, the medical water jet cutter instrument enables the use of one instrument to complete an entire operation; during the operation, there is no need to replace the surgical instrument. The medical water jet cutter instrument is simple to operate and has a short learning curve.

This utility model discloses a toner cartridge with increased capacity, comprising a toner cartridge body and a waste toner cartridge. The toner cartridge body is installed at the lower end of the waste toner cartridge, and a gap is formed between the lower end of the waste toner cartridge and the front side of the upper end of the toner cartridge body, which constitutes a laser channel. Capacity expansion compartments are respectively provided on the left and right sides of the upper front side of the toner cartridge body. The capacity expansion compartments include a first receiving compartment and a second receiving compartment. The first receiving compartment is located directly below the waste toner cartridge, and the second receiving compartment is located in front of the front end of the waste toner cartridge, with its upper end extending above the front end of the waste toner cartridge. Since there is already a gap between the toner cartridge body and the waste toner cartridge for the laser beam to pass through, the first receiving compartment utilizes the unused space between the waste toner cartridge and the toner cartridge body, increasing the capacity of the toner cartridge body; the second receiving compartment extends to the front end and above the waste toner cartridge, utilizing the longitudinal space in front of the waste toner cartridge and the unused space in front of the toner cartridge inside the printer.

The utility model relates to the technical field of laser remelting, and discloses a protective gas flow guide device for laser remelting, which comprises a flow guide shell and a lifting seat, and the lifting seat is connected to the bottom end of the flow guide shell and is arranged close to the gas inlet end of the flow guide shell; the air inlet end of the flow guide shell is connected with protective gas supply equipment, a plurality of flow guide blades are rotationally arranged at the air outlet end of the flow guide shell, and the angles of the flow guide blades adapt to the laser operation direction. The lifting seat is adjusted to a preset height, so that the air outlet end of the flow guide shell adapts to the height of a workpiece to be machined and the height of the cooling medium box, protective gas flowing out of the flow guide shell is located between a laser head and the workpiece, and smoke dust and splashing powder are prevented from entering a laser channel; along with the movement of the laser head, the angle of the guide vane is adjusted, so that the guide vane can adapt to the working position of the laser head, protective gas flow intensively covers a remelting area, the blocking effect on smoke dust in the working area of the laser head is improved, and the using amount of protective gas is reduced.

The invention discloses a femtosecond laser processing smoke dust real-time adsorption device, and relates to the technical field of laser precision processing, the femtosecond laser processing smoke dust real-time adsorption device comprises a mounting bracket, and the mounting bracket is used for fixedly connecting an adsorption device with a focusing objective lens of femtosecond laser equipment; the adsorption head unit comprises an inner pipe and an outer pipe which are coaxially arranged, the inner pipe forms a laser channel for femtosecond laser beams to pass through, an annular adsorption cavity is formed between the inner pipe and the outer pipe, and a plurality of adsorption micropores communicated with the annular adsorption cavity are formed in the pipe wall of the tail end of the inner pipe; the airflow pipeline is connected to the outer pipe, communicates with the annular adsorption cavity and is used for generating adsorption airflow; and the cooling unit is arranged on the periphery of the pipe wall of the tail end of the outer pipe in a sleeving mode, and an annular cooling water pipe is arranged in the cooling unit. Through real-time adsorption, light path protection and efficient cooling, the problem of smoke dust pollution in femtosecond laser precision machining is solved.

The application discloses a super search structure with fine adjustment, and belongs to the technical field of surveying instruments. The super search structure comprises a machine body, a laser transmitter, a photosensitive circuit board, an angle adjusting part, an angle locking part, a horizontal adjusting part and a horizontal locking part. An optical element is arranged in a laser channel of the machine body. The photosensitive circuit board receives laser emitted by the laser transmitter. The angle adjusting part and the angle locking part are detachably connected with the machine body. The angle adjusting part adjusts the rotating angle of the photosensitive circuit board on the machine body. The angle locking part limits the rotation of the photosensitive circuit board. The photosensitive circuit board is detachably connected with the machine body through the horizontal adjusting part and the horizontal locking part. The horizontal adjusting part adjusts the horizontal position of the photosensitive circuit board on the machine body. The horizontal locking part locks the photosensitive circuit board on the machine body. The application can adjust the relative positions of the laser transmitter, the photosensitive circuit board and the optical element in the optical path, simplifies the adjusting process, and prevents loosening during fixing.

The invention discloses an integrated nozzle based on an air curtain type underwater facade laser additive repairing method. The integrated nozzle comprises a nozzle body, a laser channel is formed in the center of the nozzle body, and a powder feeding channel is formed in the outer circumferential direction of the nozzle body; a cooling sleeve is arranged in the middle of the nozzle body, and a water-gas coupling sleeve is arranged on the lower portion of the nozzle body and located below the cooling sleeve. A plurality of fan-shaped openings are formed in the bottom of the water-gas coupling sleeve, and a gas outlet and a water flow outlet are formed in each fan-shaped opening in the radial direction; the gas outlets and the water flow outlets in the connected fan-shaped openings are alternately arranged, namely, one fan-shaped outlet is in an inner-side water and outer-side gas distribution mode, and the adjacent fan-shaped outlets are in an inner-side gas and outer-side water distribution mode; according to the air curtain type underwater laser additive repairing method, the air curtain type underwater laser additive repairing principle is utilized, in-situ repairing is conducted on the defects existing in the underwater vertical face position, traditional pumping-out repairing is avoided, the maintenance period is greatly shortened, and the repairing efficiency is improved.

The present application belongs to the technical field of micro-nano manipulation, photoelectric tweezers, microfluidic chip and biological photoelectric manipulation, and discloses a multi-color composite coaxial light path photoelectric tweezers system and a manipulation method, which comprises a multi-color light source output module, a coaxial composite projection module, a self-calibration pre-compensation module, a photoelectric tweezers chip manipulation module, a coaxial imaging feedback module and a closed-loop control calculation module. By using the composite of laser, LED white light and RGB multi-color light source, multi-color beam combination, coaxial projection with the same objective, coaxial imaging return with the same objective, multi-wavelength independent self-calibration pre-compensation and closed-loop feedback control principle, the multi-color composite coaxial projection beam, the red light channel space mapping model, the green light channel space mapping model, the blue light channel space mapping model, the laser channel space mapping model, the pre-compensation light pattern and the multi-color dynamic manipulation light pattern are generated, and low-damage wide-field manipulation, local fine manipulation, multi-color coding manipulation and target path closed-loop correction are realized.

The application relates to a semiconductor chamber leakage detection system and method. The semiconductor chamber leakage detection system comprises a channel module, a laser emitter, a beam splitter, a laser pipeline, a pumping module and a detection module. The laser emitter emits laser into a laser channel. Part of the laser passes through the beam splitter to form first laser. The rest of the laser is reflected by the beam splitter to form second laser and enter a detection channel. The laser pipeline reflects the first laser to form third laser. The pumping module pumps the third laser. The detection module receives the second laser and the third laser to analyze and determine the leakage of the semiconductor chamber. The semiconductor chamber leakage detection method comprises the following steps: placing the gas cap of the laser pipeline at the detection point; collecting the signals of the first detector and the second detector and converting them into gas concentration value C; setting a standard value; comparing the gas concentration value C with the standard value to determine whether leakage occurs. The application can be effectively applied to the narrow space of semiconductor equipment and high-precision detection is realized.

A transmitting system (50) and a related device, applied to the technical field of lidars. The transmitting system (50) comprises: at least one first laser circuit (501), a first driving unit (500), and a first power supply (V1). The first laser circuit (501) comprises a first laser (501a), a first energy storage unit (501b), and a first switch (501c). The first power supply (V1) is connected to the first laser (501a) and the first energy storage unit (501b) by means of the first switch (501c), the first laser (501a) and the first energy storage unit (501b) are connected in parallel, and the first driving unit (500) is connected to the first laser (501a). A voltage value provided by the first power supply (V1) is related to the relative position of the first laser circuit (501) and the first driving unit (500). The transmitting system (50) can reduce the consistency differences in output optical pulse width and transmit power between laser channels, thereby improving the detection performance of lidars.

The invention relates to the technical field of medical instruments, and discloses a small-caliber thick laser channel transurethral surgical instrument combined suite and a using method thereof.The small-caliber thick laser channel transurethral surgical instrument combined suite comprises a connector, an endoscope table, an operation table and a sleeve, the left end of the connector is provided with a connector and a special-shaped pipe, and the surface of the connector is provided with a water inlet hole; a water inlet cavity is formed in the connector, and a water inlet groove is formed in the special-shaped pipe. An outer pipe is arranged at the left end of the sleeve, a water inlet pipe and a water outlet pipe are arranged on the surface of the sleeve in a staggered mode, an inner sheath and an outer sheath are further arranged in the sleeve, and the inner sheath and the outer sheath divide the interior of the sleeve into a drainage cavity and a water injection cavity. The special-shaped hole structure is adopted to replace a traditional circular channel, while the outer diameter of the instrument is remarkably reduced, the internal operation space is not sacrificed, a smooth channel is provided for a thicker laser optical fiber, and a gap between an optical fiber pipeline and the inner wall of the special-shaped hole is ingeniously utilized to form an efficient water inlet channel.

The invention discloses an underwater laser additive repairing device and method, and relates to the technical field of equipment repairing, the underwater laser additive repairing device comprises a mounting cover, an annular light spot laser, a gas supply assembly and a plurality of wire feeders, a laser channel and a gas channel are arranged in the mounting cover, a plurality of wire feeding pipes are fixedly arranged on the mounting cover, and all the wire feeding pipes are arranged around the laser channel; a wire outlet is formed in the bottom end of the wire feeding pipe and located below the laser channel and the gas channel. The wire feeding machine can provide wires for the wire feeding pipe. The annular light spot laser can emit annular light spot laser to the laser channel, and the annular light spot laser can reach a wire sent out from the wire outlet; the gas supply assembly can provide shielding gas for the laser channel and the gas channel, the shielding gas in the gas channel is jetted to the position below the gas channel to form an annular gas curtain, the annular gas curtain surrounds the molten pool, and the shielding gas in the laser channel can reach the molten pool; according to the method, water can be effectively drained and isolated, and the repairing efficiency and quality can be improved.

The utility model discloses a laser nozzle and a laser welding module of a power battery module, and relates to the field of laser welding, the laser nozzle comprises a laser nozzle, the laser nozzle is provided with a laser channel penetrating up and down, and the left and right opposite sides of the laser nozzle are respectively provided with a dust suction port and a smoke dust overflow port. And the dust suction port and the smoke dust overflow port are communicated with the laser channel. The laser welding device has the advantages that negative pressure generated in the laser channel due to dust removal is reduced through the smoke dust overflow port, and when the dust removal wind speed is insufficient, plasma smoke dust generated in the welding process can overflow from the smoke dust overflow port, so that the risk of insufficient welding is reduced.

The application relates to a welding protective cover and a welding assembly. The welding protective cover comprises a first protective cover, a first laser channel and a first protective gas channel being throughly provided in the first protective cover and being not communicated with each other; a second protective cover, the second protective cover being detachably connected to one side of the first protective cover along a laser transmission direction, and the second protective cover being throughly provided with a second laser channel and a second protective gas channel which are communicated with each other, the second laser channel being communicated with the first laser channel, and the second protective gas channel being communicated with the first protective gas channel; and a first gas inlet of the first protective gas channel being larger than a second gas outlet of the second protective gas channel. The scheme provided by the application can realize cost reduction by replacing only the lower half of the protective cover through the segmented design of the protective cover, and can also realize effective nitrogen protection by segmenting the protective gas channel into an inlet larger than an outlet.

The application discloses a single-head spray head for laser welding, which comprises a spray head body, a longitudinal material dropping channel, a feeding channel communicated with the longitudinal material dropping channel and a longitudinal laser channel formed in the spray head body, an upper feeding channel communicated with the feeding channel formed on the spray head body, and a nozzle arranged on the spray head body; meanwhile, a material dropping control mechanism is arranged on the spray head body and corresponds to the position where the feeding channel is communicated with the longitudinal material dropping channel. The single-head spray head for laser welding can control the rapid movement of the solder ball in the spray head body and orderly spray the molten solder ball, the solder ball and the spray head are not easy to be abraded, the welding efficiency and accuracy are effectively improved, and the single-head spray head for laser welding has the advantages of simple structure, small size and stable operation.

The utility model discloses a dust removal device, laser cleaning equipment and a battery production line, and relates to the technical field of laser cleaning, the dust removal device comprises a plurality of dust removal covers, an opening and closing device and a control device; the multiple dust removal covers are distributed in the first direction, laser channels are defined among the multiple dust removal covers, the laser channels are configured to allow laser beams emitted by the laser cleaning device to penetrate through and are opposite to the to-be-cleaned pole pieces loaded on the movable platform in the first direction, and each dust removal cover is provided with a dust removal channel; the opening and closing device is configured to be capable of controlling the multiple dust removal channels to be opened or closed; the control device is electrically connected to the opening and closing device. According to the technical scheme, the opening and closing devices can selectively open the dust removal channels of the corresponding dust removal covers, so that smoke dust generated in the laser cleaning process can be extracted in the moving direction of the movable platform, and the cleaning effect of the laser cleaning equipment is improved.

The invention relates to an environment-friendly cladding device based on dust fall and a bare board forming mold repairing method, and relates to the technical field of cladding devices. The ball-head-shaped spray head is arranged at the nozzle end of the cladding spray head main body in a fixed-axis rotating manner and is matched with the arc-shaped matching end surface; a cleaning block; the dust fall adsorption head is integrally connected to the cleaning block, and a dust suction opening of the dust fall adsorption head faces one side of a nozzle of the ball-head-shaped spray head; according to the invention, the front end of the cladding spray head main body is provided with the ball-head-shaped spray head which rotates around the fixed axis, on one hand, the ball-head-shaped spray head serves as a common cladding spray head structure in the prior art and also serves as a closed structure of a laser channel, and one side of the ball-head-shaped spray head is provided with the cleaning block, so that the cladding spray head main body can be used as a cleaning structure before cladding; the current situation that in the prior art, the cladding function is single is solved, and the method is particularly suitable for the repairing scene of the bare board mold.

The application discloses a vertical laser driving circuit for adjusting a voltage-controlled multi-way selection switch, comprising a multi-way laser emitter, a multi-way selection switch, a current monitor, an adjustable voltage generator and a programmable array logic device; the programmable array logic device is connected with the current monitor, the current monitor measures the charging capacity change of an energy storage capacitor on each laser channel, controls the adjustable voltage generator to generate a corresponding compensation voltage, triggers a gallium nitride switch through the multi-way selection switch and a gallium nitride driving circuit to make the multi-way laser emitter emit stable laser, and ensures the working stability.

The utility model discloses a kind of laser cleaning head overheating protection structure with temperature real-time monitoring, including laser cleaning head main body, overheating protection shell, water cooling jacket and laser channel, the central position of laser cleaning head main body is provided with laser channel, and the inside wall of the laser channel is evenly embedded with temperature sensing element, the overheating protection shell is set on the laser cleaning head main body outside laser channel, and the overheating protection shell is close to the side of laser cleaning head main body and is provided with water cooling jacket, the inside of overheating protection shell both sides is evenly provided with radiating fin by pivot, and the overheating protection shell on the side of radiating fin is evenly provided with drive chamber.The utility model is installed with laser cleaning head main body, overheating protection shell, laser channel, temperature sensing element, water cooling jacket and radiating fin, temperature can be detected in real time and preventive heat dissipation is carried out, direct trigger shutdown protection is avoided, and operation continuity and production efficiency are improved.

The application discloses a kind of miniature full-automatic focusing follow-up anti-collision laser devices, including focusing mirror, follower and nozzle, follower is movably arranged below focusing mirror, follower has first laser channel;Nozzle is connected between the bottom of follower by magnetic force adsorption, nozzle has second laser channel with first laser channel communication, the light beam after focusing mirror focusing can pass through first laser channel and second laser channel;Drive structure is used to drive follower to move up and down.The nozzle of the application is connected with follower by magnetic force, so that it can collide and fall off when encountering horizontal obstacles, achieving horizontal anti-collision, drive structure can drive follower to move up and down, so that it can quickly lower or raise height when encountering part surface fall empty and mutation, achieving vertical anti-collision, drive structure can drive nozzle to approach the surface of machined part, i.e., it can move following the shape of part surface, achieving following function.

The invention relates to the technical field of intelligent control, in particular to a laser-driven intelligent regulation and control method and system based on deep learning, and the method comprises the following steps: triggering a laser channel and analyzing a time point, track and temperature data for path screening and feature extraction, and track change and slope direction for recognizing a sudden change number; the track included angle is used for judging direction deviation and generating a laser driving intelligent control instruction. According to the method, a corresponding relation is established between a channel response sequence and an initial time point through an index, a track and temperature diffusion distribution form a joint feature basis, a displacement change slope is used for screening out invalid channels, and channel grouping is realized through slope direction difference comparison of a track rate and a temperature change gradient; according to the abrupt change track, a number set is extracted through amplification and persistence parameters, the path deviation state is analyzed and recognized through included angle direction, direction separation identification linkage jump control and path trend data recording are achieved, a control instruction and number change are matched in real time, and the path recognition precision and the regulation and control response efficiency are improved.

The utility model discloses a particulate matter concentration measuring device. The particulate matter concentration measuring device comprises a laser emitting module, a measuring chamber main body, a connecting seat and a lens module, a measurement chamber is formed in the measurement chamber main body; the laser emitting module is used for emitting laser to the measuring chamber; the connecting base is located between the laser emitting module and the measuring chamber body and connected with the laser emitting module and the measuring chamber body, a first laser channel allowing laser to pass through is formed in the connecting base, the first laser channel is communicated with the measuring chamber, and the connecting base is provided with a lens module mounting groove; the lens module is detachably installed in the lens module installation groove, the lens module seals the lens module installation groove and separates the first laser channel, and the lens module is configured to enable laser to pass through the lens module. Through the arrangement, the lens module can be conveniently disassembled to realize cleaning and maintenance of the lens, so that the accuracy of a particulate matter concentration measurement result is improved.

This application provides a laser-microwave fusion communication method and system for low-Earth orbit (LEO) satellites, applicable to the field of satellite communication technology. The method, applied to a LEO satellite communication system, includes: simultaneously receiving laser and microwave signals from a ground station communication system via a laser-microwave co-aperture antenna; processing the signals through the laser and microwave channels to obtain processed laser baseband signals and processed microwave baseband signals; converging the laser and microwave baseband signals into an integrated laser-microwave signal processor; performing routing scheduling based on real-time monitored link quality parameters and a satellite-ground cooperation protocol to determine the target transmission link and form corresponding first and second downlink data streams; mapping the first downlink data stream to a downlink laser signal and the second downlink data stream to a downlink microwave signal, respectively, and transmitting them to the ground station communication system via the laser-microwave co-aperture antenna. This improves communication efficiency and reduces payload resource consumption.