261 results about "Laser probe" patented technology

The invention relates to the technical field of optical engineering, in particular to an AI silicon carbide lens-oriented aspheric laser polishing precision online detection and feedback system. Comprising a detection module; the data processing module is electrically connected with the detection module and used for constructing a lens surface three-dimensional model and calculating polishing precision parameters; the feedback control module is electrically connected with the data processing module, is used for generating a feedback control strategy and comprises a strategy generation unit and a parameter optimization unit; an execution module; and an intelligent learning module. According to the design, a laser measuring head, an energy sensor array and an environment sensor are integrated through the detection module, synchronous acquisition of multi-dimensional data such as surface profile, laser energy distribution and environment parameters is realized, and three-dimensional point cloud data with consistent time and space are generated through multi-modal fusion processing (time domain synchronization, space registration and feature enhancement) of the data preprocessing unit; the physical essence of the polishing process is completely represented, and the detection comprehensiveness and the data relevance are improved.

The invention discloses an aluminum electrolytic capacitor appearance defect detection device, relates to the field of aluminum electrolytic capacitor detection, and solves the problem that an existing detection device is difficult to comprehensively detect an aluminum electrolytic capacitor. The aluminum electrolytic capacitor appearance defect detection device comprises a device base and two first supporting plates, and two first transmission belts are arranged between the two first supporting plates; a push roller is arranged on the outer side of the first transmission belt, supporting frames are installed on the corresponding sides of the two first supporting plates, a first detection box is fixedly installed at the top of the device base, and a plurality of first laser probes are arranged on the inner side of the first detection box; the transfer mechanism is used for detecting pins of the capacitor, and the transfer mechanism is mounted at the top of the device base; through the transfer mechanism, the first laser probe detects the capacitor entering the first detection box, under the conveying of the first transmission belt, the capacitor is turned over, and the pins of the capacitor can face upwards, so that the pins of the capacitor can be detected conveniently, and the effect of comprehensive detection is achieved.

The invention provides a spectral analysis line screening method and system, and the method comprises the steps: collecting a plasma spectrum based on a laser probe, taking the plasma spectrum as an original spectrum, calculating a corresponding average spectrum, and carrying out the spectrum peak recognition of the average spectrum through wavelet transformation; extracting predetermined features of spectrum peaks from the original spectrum, and performing classified scanning on each spectrum peak based on the predetermined features of the spectrum peaks; the classified scanning results form a column vector matrix, and an accumulated correlation coefficient between column phasors in the column vector matrix is calculated; arranging the accumulative correlation coefficients in an ascending order, and selecting spectrum peaks corresponding to the accumulative correlation coefficients which are ranked in the front as analysis line clusters; extracting predetermined features of the analysis line cluster from the original data, and constructing a multi-spectral peak classification model through a machine learning algorithm based on the features of the analysis line cluster; and screening the spectral analysis lines to be identified through the multi-spectral peak classification model. Through the scheme, the dimension of the spectral peak feature vector can be reduced, the model data volume is reduced, the analysis line screening efficiency is improved, and the classification accuracy is guaranteed.

The invention discloses ultrafast photo-thermal PCR amplification equipment and a use method. The ultrafast photo-thermal PCR amplification equipment comprises a shell, and a laser probe and an infrared temperature sensor are arranged in the shell; a chip rack is arranged in the shell, and a chip to be tested is placed in the chip rack; the laser probe is located on one side of the chip frame, the infrared temperature sensor is located on the other side of the chip frame, and the laser probe inclines upwards in the vertical direction. An embedded industrial all-in-one machine is installed on the shell, and the output end of the infrared temperature sensor is connected with the input end of the embedded industrial all-in-one machine. An excitation light source of the laser probe and a coupling non-contact infrared temperature measurement sensor can realize temperature control of nanoparticles in different batches, the ultrahigh temperature change requirement of PCR is met, infrared temperature measurement control replaces a traditional thermocouple to serve as a temperature feedback device, the phenomenon of reagent pollution caused by contact measurement is avoided, and the detection accuracy is improved. The accuracy of later data detection is ensured, and the laser probe is inclined upwards along the vertical direction, so that a PCR reaction area is fully covered.

The invention relates to the technical field of laser measuring instruments, and discloses a device for measuring roadway roof separation by laser, which comprises a roadway roof, a laser probe, a first threaded pipe, a second threaded pipe and a mounting mechanism, and is characterized in that the laser probe is mounted on the first threaded pipe and is connected with a cable; the mounting mechanism is used for mounting the second threaded pipe on the first threaded pipe; the mounting mechanism comprises a base arranged on the roadway top plate, a rotating mechanism and a lifting mechanism are arranged on the base, and the lifting mechanism is used for feeding the laser probe, the first threaded pipe and the second threaded pipe into drill holes formed in the roadway top plate. The device for laser measurement of roadway roof separation overcomes the defects that in the prior art, equipment is large in occupied area and depends on the stability of a bottom plate, and the measurement precision is prone to being interfered, and the roof separation measurement device is more efficient, more accurate and more suitable for the underground complex environment.

The invention provides a low-interference drainage pipeline defect and state automatic detection device and method, and relates to the technical field of defect detection.The low-interference drainage pipeline defect and state automatic detection device comprises an inspection detection system and two fixed detection systems, and each fixed detection system comprises a semicircular-arc-shaped pipe wall fixing structure, a fixed detection transmission control system and a plurality of first laser probes; the fixed detection transmission control system is installed on the pipe wall fixing structure, the multiple first laser probes are installed at different positions of the pipe wall fixing structure respectively, and the multiple first laser probes are connected with the fixed detection transmission control system; the inspection detection system comprises an inspection track and an inspection robot, the inspection robot comprises an inspection robot carrier, a robot controller and a plurality of second laser probes, the plurality of second laser probes are respectively mounted at the top and the bottom of the inspection robot carrier, and the inspection robot carrier moves along the lower surface of the inspection track in a hoisting manner. According to the invention, various defects can be detected when the drainage pipeline is in normal operation and drainage.

The utility model discloses a flatness detection device. A cleaning assembly, a drying assembly, a flatness detection assembly and a screening-out assembly are sequentially installed on a conveying device in the conveying direction. A conveying part of the conveying device is used for driving the cooling fins to sequentially penetrate through the cleaning assembly, the drying assembly, the flatness detection assembly and the screening-out assembly. The cleaning assembly is provided with a cleaning head, the cleaning head is aligned with the conveying part of the conveying device, the cleaning head is used for spraying atomized cleaning liquid to the surfaces of the cooling fins, and the drying assembly is used for drying the cleaned cooling fins; the flatness detection assembly comprises a detection support, a lifting cylinder, a lifting plate and a laser probe. The lifting cylinder is fixedly connected to the detection bracket; the lifting plate is connected to the lifting end of the lifting cylinder; and the laser probes are uniformly arranged on the lifting plate. The screening-out assembly is used for pushing out defective cooling fins. And flatness detection is carried out through a plurality of laser probes, so that comprehensive coverage and accurate detection of the surface of the cooling fin are ensured, and the flatness and quality stability of a product are improved.

The invention relates to a knee joint health care device based on traditional Chinese medicine external therapy. The device comprises a belt body, a massage assembly, a moxibustion assembly, a traction assembly and a hot compress assembly. The massage assembly comprises magnetic beads, and the magnetic beads are arranged on the inner side of the belt body around the patella. The moxibustion assembly comprises laser probes, and the laser probes are installed at the positions, corresponding to inner and outer knee eyes, of the belt body. The traction assembly comprises air bags, and the air bags are embedded into the two sides of the belt body; the hot compress assembly comprises heating elements, and the heating elements are distributed on the lining part of the belt body. Compared with the prior art, convenient and safe knee joint nursing is achieved, and the family nursing requirements of knee arthritis patients are met.

The invention discloses a microwave and optics combined wind profile detection system, which relates to the technical field of meteorology and integrates a laser probe of a laser radar subsystem in the center of a microwave antenna array plane of a wind profile radar subsystem. The electric scanning center of the wind profile radar subsystem and the optical detection center of the laser radar subsystem are enabled to coincide, and the comprehensive processing subsystem is utilized to realize unified scheduling of the two subsystems so as to guarantee the synchronism of the two subsystems. The comprehensive processing subsystem is used for carrying out data quality analysis and data analysis control on the radial speed data obtained by the two subsystems so as to realize data fusion, and fused radial speed data is obtained. Therefore, the wind profile radar subsystem and the laser radar subsystem are integrated together to realize wind profile combined application detection, and respective detection characteristics of the wind profile radar and the laser radar can be effectively combined, so that the wind profile detection precision and accuracy are improved.

The present invention provides an automatic detection device and method for defects and states of low-interference drainage pipes, which relates to the technical field of defect detection. It includes an inspection and detection system and two fixed detection systems. The fixed detection system includes a semi-circular pipe wall fixing structure, a fixed detection transmission control system, and multiple first laser probes. The fixed detection transmission control system is installed on the pipe wall fixing structure, and multiple first laser probes are respectively installed at different positions of the pipe wall fixing structure. The multiple first laser probes are connected to the fixed detection transmission control system; the inspection and detection system includes an inspection track and an inspection robot. The inspection robot includes an inspection robot carrier, a robot controller, and multiple second laser probes. The multiple second laser probes are respectively installed at the top and bottom of the inspection robot carrier, and the inspection robot carrier moves along the lower surface of the inspection track in a hoisting manner. The present invention can perform various defect detections when the drainage pipe is in normal operation and drainage.

The present invention provides a bridge crack measuring device and a measuring method for a municipal bridge. The measuring device comprises a panel, a driving mechanism, a laser measuring assembly and a positioning mechanism. A first guide rod is inserted into the inner side of the panel, a positioning mechanism is pressed against the bottom of the first guide rod, a moving wheel is inserted into the bottom of the positioning mechanism, and the positioning mechanism is pressed on both sides of the bridge crack to be measured through the moving wheel. A driving mechanism is installed in the middle of the panel. There are two first guide rods and two positioning mechanisms. The present invention can drive a first laser probe at the bottom to pass along the surface of the bridge crack by toggling a vertical measuring mechanism on one side through a driving mechanism, and cooperate with a translation guide mechanism to obtain the width. Therefore, during the movement of the entire device, the width data of the crack at different positions can be quickly obtained at a higher frequency through the driving mechanism, and the measurement error can be further reduced by cooperating with the translation guide mechanism and the two positioning mechanisms at the bottom for positioning.

The invention discloses a measuring machine for detecting defects of a constant velocity universal joint component, and aims to solve the problems that the existing equipment is low in double-reference alignment efficiency, poor in precision and easy to be polluted and interfered. The device comprises a workbench with a center avoiding hole, a detection execution unit comprising a detachable contact type or laser measuring head, a motion driving unit driving the measuring head to move in a three-dimensional mode, a reference positioning unit comprising a double-vision assembly and a positioning adjusting assembly, an electric control unit and a cleaning auxiliary assembly. The electric control unit cooperates with the double-vision assembly to collect inner hole and outer circle references and controls the positioning adjusting assembly to finely adjust the position of a workpiece, and double-reference alignment is achieved. The measuring machine can improve the positioning precision and efficiency, enhance the workpiece clamping stability and the equipment universality, reduce the detection error caused by pollution, and guarantee the reliable detection.

The invention discloses a high-energy light-electricity-force combined fracturing anti-reflection test device and method, and the test device comprises a cuboid test piece which is a coal rock sample; the loading pressing plates are arranged in the left direction, the upper direction and the front direction of the cuboid test piece respectively, a fracturing groove and a sensor groove are formed in the ends, making contact with the cuboid test piece, of the loading pressing plates, and a sliding rail is installed at the top of the fracturing groove and used for being connected with the fracturing module; the fracturing module comprises a drill rod, a cable chamber and a high-pressure water chamber are arranged in the drill rod, and the cable chamber is used for laying a laser cable and an electric pulse cable; the laser cable is respectively connected with a laser probe on the outer wall of the drill rod and an external laser generator; the electric pulse cable is respectively connected with an electric pulse probe on the outer wall of the drill rod and an external discharge capacitor, and the electric pulse probe is respectively provided with a positive electrode and a negative electrode. The device can be carried out under indoor conditions, is simple, reliable and safe to operate, and can be used for carrying out fracturing tests of different positions and different parameters on a test piece.

The invention provides a roadway full life cycle deformation monitoring system and method based on multidirectional laser ranging, and relates to the technical field of coal mine roadway surrounding rock deformation monitoring. Calculating the horizontal distance between the device placement point and the side wall of the roadway and the vertical distance between the device placement point and the distance measurement point before and after deformation of the roadway, and further calculating the horizontal distance, the vertical distance and the linear distance of the distance measurement point before and after deformation of the roadway; the monitoring angle alpha of the laser probe can be adjusted, and calculation of deformation at different positions of the side wall of the roadway is achieved.

The invention belongs to the technical field of laser rust removal, and particularly relates to a high-speed railway sleeper prestressed material laser rust removal device. Comprising a support, the support is provided with a hydraulic push rod, the telescopic end of the hydraulic push rod is fixedly connected with a connecting frame, and the connecting frame is fixedly connected with a lifting shell; the electric rotating rod is rotationally connected to the lifting shell, the electric rotating rod is in threaded connection with a threaded transmission rod, and the threaded transmission rod is rotationally connected with a laser probe; and the first connecting rod is connected to the lifting shell in a sliding mode, the first connecting rod is fixedly connected with a T-shaped shell, and the T-shaped shell is connected with a sliding shell in a sliding mode. Through reciprocating sliding of the sliding shell, the sliding shell continuously rubs and extrudes reinforcing steel bars, bundles of reinforcing steel bars are gradually dispersed, the stacking height is reduced, finally, the reinforcing steel bars are rubbed and extruded into one layer, the spraying area of the laser probe on the reinforcing steel bars is increased, and the laser probe can better remove rust on the reinforcing steel bars.

The invention discloses a magnetic anisotropy quantitative method and system for detecting terahertz signals based on a rotating magnetic field, and the method comprises the steps: (1), obtaining a to-be-detected magnetic / non-magnetic material film which comprises at least one non-magnetic film layer with strong spin-charge flow conversion and at least one magnetic film layer; (2) transmitting femtosecond laser pumping pulse to the magnetic / non-magnetic material film to be detected, and radiating terahertz waves; (3) applying a magnetic field to the magnetic / non-magnetic material film to be tested; (4) setting the relative time delay of the femtosecond laser detection pulse and the femtosecond laser pumping pulse to the signal position of the terahertz wave, continuously rotating the angle of applying the magnetic field, and detecting terahertz wave signals at different magnetic field angles through the femtosecond laser detection pulse; and (5) calculating to obtain the magnetic anisotropy field of the magnetic thin film layer according to the terahertz wave signals under different magnetic field angles. The method does not need to contact a sample for measurement, does not need to carry out micro-nano processing on a detection material, is simple in preparation and test processes, and can realize nondestructive detection.

The present invention provides a laser pulse energy control method and system for surface treatment, and relates to the field of laser pulse energy control technology. The method comprises: controlling a laser probe within a test cycle so that the laser spot moves on the surface of a workpiece, and changing the power and moving speed of the laser probe at multiple moments, and measuring the first temperature data of multiple positions through an infrared camera, thereby determining the control function between the temperature of the spot on the trajectory between adjacent moments and the power and moving speed of the laser probe, and obtaining the first area of ​​the spot on the surface of the workpiece, the size of the area to be processed, the preset processing time and the preset processing temperature, and then determining the working moving speed and working power of the laser probe in combination with the control function, thereby controlling the laser probe to perform surface treatment on the workpiece. According to the present invention, various factors are comprehensively considered to reasonably set the power and moving speed of the laser probe to improve the control accuracy of the laser pulse energy.

The invention relates to the technical field of coated white board thickness detection, and discloses a thickness detection device on a coated white board production line, which comprises a rack, a thickness detection mechanism is arranged above the rack, a coated white board body is arranged on the thickness detection mechanism, and the coated white board body is arranged on the rack. And an electrostatic dust collection mechanism is arranged below the coated white board body. According to the thickness detection device on the coated white board production line, chippings can be generated when a coated white board body is subjected to thickness measurement through the thickness detection mechanism, the chippings can be conveniently adsorbed through an electrostatic dust collection mechanism, and the distance between white board clamping plates can be conveniently controlled by clamping supporting plates through cooperation of adjusting sliding holes and moving sliding blocks; the coated white board body can be conveniently and flexibly clamped by the white board clamping plate and can be conveniently changed according to the change of the winding and unwinding height of the coated white board body, the distance between the two sides of the coated white board body can be conveniently measured by the laser probe, the thickness of the coated white board body can be further obtained, and convenience and rapidness are achieved.

The invention provides an excimer laser system including a means for authenticating laser probes to be used with the excimer laser system via radio-frequency identification techniques.

The utility model discloses a cotton feeding roller gear fracture alarm device which comprises a cotton feeding roller body and a laser detector, a supporting shaft is arranged in the cotton feeding roller body, a detection shaft is arranged at one end of the supporting shaft, a fixing mechanism is arranged between the detection shaft and the supporting shaft, a fixing seat is arranged above the cotton feeding roller body, and a gear is arranged on the fixing seat. The utility model relates to the technical field of fine opening equipment, in a normal state, the laser detector can receive long and short signals which uniformly and alternately appear, and when cotton fibers or impurities are clamped into the gear on the supporting shaft to influence the operation of the gear, the laser detector is driven to rotate, and the gear is driven to rotate. And long and short alternating signals are not uniform, so that cotton fibers or impurities need to be cleaned in time.

The utility model relates to the technical field of laser probe fixing, and discloses a laser probe fixing device for oral disease treatment, which comprises a fixing seat, the surface of the fixing seat is rotatably connected with a telescopic main rod through a damping rotating shaft, and a telescopic auxiliary rod is inserted into the telescopic main rod. First threaded holes are formed in the surface of the telescopic main rod and the surface of the telescopic auxiliary rod correspondingly, and first fixing bolts are in threaded connection with the interiors of the first threaded holes. According to the laser probe fixing device for oral disease treatment, through cooperative arrangement of a first damping bearing, a first damping rotating block, a first adjusting rod, a second damping bearing, a second damping rotating block and a second adjusting rod, the direction of a laser probe can be adjusted through the first damping bearing and the second damping bearing during use; and the angle of the laser probe is adjusted through the first damping rotating block and the second damping rotating block, so that the effect of adjusting the direction and the angle of the laser probe is achieved.

The invention discloses a non-contact optical coherence elastography endoscope device and a use method. A millimeter-level ultrasonic excitation probe and a laser detection probe device are integrated; a millimeter-level air coupling ultrasonic transducer is adopted to realize lossless and non-contact excitation of sample tissues; the three-dimensional structure and vibration information of the sample are detected and acquired by adopting a high-speed near-infrared swept-frequency laser; an ultrasonic probe and a laser probe device are integrated and packaged by adopting a 3D printing method, so that different application objects can be adapted; according to the non-contact optical coherence elastography endoscope method and device, an off-axis parabolic mirror is adopted to achieve confocal of ultrasonic pulses and excitation detection light beams, non-contact direct excitation and imaging can be achieved through an air medium, use of various coupling agents is avoided, and the non-contact optical coherence elastography endoscope device has the advantages of being simple in structure and easy to machine and integrate a system.

A method and a system for imaging a dynamic scene, by time-spectrum mapping when a single chirped pulse probes the dynamic scene, storing temporal information at different wavelengths, spectral shearing, spatial encoding and reverse spectral shearing; spatiotemporal integration; and image reconstruction from a resulting captured snapshot, using a laser source configured to emit a linearly chirped laser probe pulse; an imaging unit; a shearing and reversing shearing unit; an encoder; a detector; and a computer; wherein the imaging unit is configured to record the linearly chirped laser probe pulse transmitted by the dynamic scene in a snapshot; the shearing and reversing shearing unit is configured to spectrally shears the linearly chirped laser pulses received from the imaging unit to the encoder, the detector records a compressed snapshot of a temporal information of the dynamic scene read out by the probe pulse; and the computer processes the snapshot and yields a(x,y,t) datacube of the dynamic scene.

The utility model provides a kind of protective cover substrate measuring device, it is related to substrate measurement technical field, including position transfer mechanism, rotating mechanism, workpiece placing mechanism and laser probe, rotating mechanism is connected with position transfer mechanism, the rotation axis of rotating mechanism and the axis of laser probe are non-collinear and parallel arrangement.Through the setting of position transfer mechanism, rotating mechanism, workpiece placing mechanism, when measuring, workpiece is placed on placing mesa, annular placing mesa can effectively support workpiece, rotating mechanism drives workpiece rotation, multiple detection points are rotated to laser probe downside to measure respectively, without manual switching, while improving efficiency, avoid the problem of scratch in the process of manual multiple taking and placing, after using the device in the present scheme, the proportion of scratch is reduced from original 3.73% to 0.23%.

The application relates to the technical field of floating disc size measurement, and provides a laser measuring device for the size of a full-liquid stainless steel double-disc inner floating disc, which comprises a device body, a rack fixedly installed at the top of the device body, a laser probe arranged at the top right side of the rack, two inner floating disc bodies arranged at the top of the rack, a gantry fixedly installed at the top of the device body, and the gantry being located at the outer side of the rack. When the application is used, the reciprocating screw rod and the connecting plate structure are arranged, so that the soft pad can be accurately attached to the top of the inner floating disc body, the shaking or displacement of the inner floating disc body during the measurement process can be effectively avoided, the measurement precision is ensured, the soft pad can play a buffering role when being in contact with the inner floating disc body, the inner floating disc body is prevented from being subjected to excessive pressure during the measurement process, and the product is prevented from being deformed or suffering other adverse effects.

The drainage pipe network water level measuring device comprises a supporting frame, a driving assembly, a dredging assembly and a laser probe, the bottom of the supporting frame is connected with a lifting base through an air cylinder, and the laser probe is fixedly installed on a connecting frame at the bottom of the supporting frame; the hollow shaft is rotatably sleeved in the middle of the lifting seat in the vertical direction, the inner sleeve is slidably sleeved in the hollow shaft in the vertical direction, the top of the inner sleeve is fixedly connected with the bottom of the supporting frame, the spiral blade is fixed on a shaft body below the hollow shaft, the bottom of the hollow shaft is closed, a liquid inlet hole is formed in the side wall of the hollow shaft, a floating body is arranged in the hollow shaft, and a receiving point position is arranged at the top of the floating body; under the action of the air cylinder and the driving assembly, the lifting base drives the hollow shaft to move downwards, and meanwhile the hollow shaft can rotate synchronously. Sludge and pollutants in the pipeline are cleaned, interference of the sludge and the pollutants on water level measurement is eliminated, and therefore the water level measurement precision is remarkably improved.

The application discloses a kind of monitoring devices of pressure fluctuation frequency and amplitude in cavitation collapse process, including water tank, cavitation generator, magnetic fluid, magnetic field device, laser generator, optical splitter, laser probe and receiver;Optical splitter is emitted by single beam laser of laser generator and is divided into two beams, one is emitted as laser, frequency is f ;Another is as reference laser, frequency is f + f r ;Laser probe exports and irradiates on the tip of magnetic fluid by emitting laser, and reflection is formed to form reflected laser, and its frequency is f + f D ;Receiver, accept reflected laser, and it has reference laser inside by optical splitter, and its frequency is f + f r The application can master the whole dynamic data of quantized cavitation collapse by monitoring the frequency and amplitude of whole process pressure fluctuation caused by cavitation collapse in liquid environment through magnetic fluid magneto-rheological effect, tip surface effect and Doppler effect, which provides important technical means for single-cavity theory development and hydraulic machinery cavitation flow research.

The application discloses a universal automatic dismounting device for a ship hydraulic cylinder, wherein a cylinder body anti-rotation mechanism is used for limiting the rotation of the cylinder body during threaded dismounting, a cylinder body rear support adjusting mechanism is used for positioning the cylinder body of the hydraulic cylinder, and the cylinder body is fixed by being pressed by an oil cylinder, and front and rear combination is used for automatically adjusting the cylinder body; a front end cover dismounting mechanism is used for dismounting and mounting the threaded front end cover, and is used for tightening or loosening; a laser probe detection mechanism is used for detecting the central axis of the cylinder body; a piston rod centering and positioning mechanism is used for centering and positioning the piston rod, and the piston rod axis is coincided with the working generatrix; and a piston rod positioning and pushing and pulling mechanism is used for accurately positioning the piston rod and pushing the piston rod into the cylinder body. The automatic dismounting device for the ship hydraulic cylinder can realize automatic centering of the hydraulic cylinder dismounting through automatic detection and automatic adjustment, and can be compatible with oil cylinders with different diameters and lengths and end covers with different diameters to realize automatic tightening and loosening.

The utility model provides a laser probe protection mechanism of a laser navigation forklift type AGV, and relates to the field of AGVs. The laser probe protection mechanism of the laser navigation forklift type AGV trolley comprises a split-type fixed seat and a protective cover used for providing external protection for a laser probe, and the fixed seat comprises a seat plate and a damping cushion block which are fixedly connected. According to the laser probe protection mechanism of the laser navigation forklift type AGV trolley, external protection can be provided for a laser probe in the use process of the AGV trolley through the arrangement of the protection cover on the fixed seat, and an annular air barrier can be formed outside a spherical cover through the arrangement of an air curtain mechanism on the outer side of the fixed seat, namely the cooperative use of multiple groups of flow guide seats and an air pump; the dust and water mist attachment is continuously blocked, the manual cleaning frequency is reduced, then stable self-cleaning protection is provided for the protective cover, through modular split type arrangement of the fixing base, the protective cover and the air pump, workers can conveniently disassemble, assemble and replace independent parts, and the maintenance cost is reduced.