190 results about "Beam laser" patented technology

Provided is a handheld device and a method for detecting weld defects on a weld surface. The handheld device projects a thin beam laser light on the weld surface using a laser emitter. A processor receives the projected thin beam laser light from a laser receiving sensor, which indicates captured contours of the weld surface. The captured contours are processed to filter laser lines and extract contours. The extracted contours are utilized to classify a type of weld surface such as, surface joints, butt joints, corner joints, and tee joints. The processor, upon classifying, automatically adjusts angle and position of the laser light to be projected on the weld surface and detects deviation patterns by employing an ensemble of a laser line extraction process and a pixel width measurement process. The processor determines the detected deviation patterns as one or more defects on the weld surface that is being inspected.

Laser-scanning systems for augmented reality glasses displays and LiDAR (light detection and ranging) use photonic integrated circuits to generate multiple collimated (or low-divergence) modulated laser beams. Laser light is guided on the photonic chip, expanded, and emitted from the surface of the chip (using grating coupler devices) as one or more large-diameter (e.g., millimeter-scale), collimated or low-divergence beams. These gratings may be integrated onto movable microelectromechanical systems (MEMS) plates to steer the beam along two angular axes. Alternatively, the beam(s) from the grating(s) may be steered by a separate MEMS mirror integrated onto the photonic chip or on another chip. Such systems enable multi-beam laser scanning systems without collimation lenses, reducing the size and packaging complexity of high-performance laser scanning systems for augmented reality glasses and LiDAR.

The invention is applicable to the technical field of marine oil and gas resource exploration, and provides an intelligent monitoring system and method for carbon isotopes of wellbore gas, the system comprises an explosion-proof shell, and further comprises a gas pretreatment module for removing impurities affecting CH4 and C2H6 gas spectral lines and adjusting temperature and pressure of measured gas; the optical cavity detection module comprises a laser, a collimator, a detector and an MPC, and is used for completing the energy level excitation of the infrared light to the gas to be detected, the injection of a detection light source into the MPC from the laser, the multiple reflection of the detection light in the MPC, the built-in multi-beam laser light source, and the absorption detection of the multi-component gas through a single optical cavity; and the data processing module is used for collecting, processing, displaying and outputting the measured data in real time. The system is high in detection precision, high in environmental adaptability, high in response speed and miniaturized in equipment, and has a wide market prospect.

The invention discloses a wire harness laser coding system based on CCD camera recognition. The wire harness laser coding system comprises a mechanical arm, a wire harness clamping jaw, a wire harness end clamping unit, a horizontal guide rail, a ccd visual detection unit and a laser coding device. The sides, close to each other, of the two wire harness end clamping units are coaxially provided with two wire harness end insertion ports. The two wire harness clamping jaws are arranged on the displacement mechanical arm, the two wire harness clamping jaws can clamp the positions, close to the two ends, of the target wire harness respectively, and drive the clamped target wire harness to move to the position between the two wire harness end clamping units under the action of the mechanical arm, so that the two ends of the target wire harness are coaxially aligned with wire harness end inserting openings of the two wire harness end clamping units respectively; the two wire harness end clamping units can synchronously move in the extending direction of the horizontal guide rail. Original characters and patterns on the target wire harness are made to deviate from the sight line of the ccd visual detection unit through the ccd visual detection unit, and therefore finally achieved code printing effectively avoids the original characters and patterns on the surface of the wire harness.

A system for drying a battery electrode coating includes two laser diode arrays and a laser module. Each laser diode array emits multi-beam laser radiation to an edge region including a respective edge of a coating lane deposited on a metal foil. The laser module emits a diverging laser beam to an interior area of the coating lane between the two edges. The intensity distribution of the diverging laser beam at the coating lane spans a gap in the widthwise dimension between respective intensity distributions of the multi-beam laser radiation from the two laser diode arrays. The use of laser diode arrays to perform the edge drying allows for tailoring the intensity distribution of the combined laser irradiation to dry the coating lane without over-drying and delaminating the edges. The use of a single, diverging laser beam in the interior area allows for optimizing affordability and energy efficiency.

According to the multi-beam laser-induced sintering method, a first electrode is arranged on the first surface of a photovoltaic cell to make contact with a first grid line, a second electrode is arranged on the second surface or the first surface of the photovoltaic cell to make contact with a second grid line, and the first electrode and the second electrode are connected with the positive electrode and the negative electrode of a power source respectively to apply reverse bias voltage to the cell; and a plurality of split light spots are adopted to simultaneously scan different scanning areas of the photovoltaic cell for laser-induced sintering. The scanning area is divided into a plurality of strip-shaped blocks in the direction perpendicular to the extending direction of the first electrode, one light splitting light spot corresponds to one scanning area for laser scanning, and different light splitting light spots are different in power density. By means of the method, the laser-induced machining effects of the areas close to and away from the first electrode tend to be consistent; the situation that multiple split light irradiates the same grid line at the same time to reduce the influence of generated large current on the grid line and a cell substrate is avoided, and the laser-induced sintering effect is improved; and the bad EL black edge caused by reverse breakdown and over-processing of the edge area of the battery piece is avoided.

A river channel flow estimation method based on an unmanned aerial vehicle and decision tree regression comprises the steps that the unmanned aerial vehicle is used for carrying a small dual-beam laser radar and an ultrasonic flow meter to measure the coordinates of a river channel section measuring point, the water depth and the water body surface flow velocity; according to the determined riverway water surface range, fine segmentation division is carried out, and the abscissa of the vertical line of each segment is determined; performing supervised learning by using a decision tree regression algorithm, determining a subset after model training according to the set maximum depth of a decision tree, and predicting the water depth and the surface flow velocity corresponding to each segment vertical line; and according to the predicted water depth and surface flow velocity of each vertical line, calculating the water passing area and the average flow velocity between adjacent vertical lines, and obtaining the cross-section flow of the river channel by multiplying and accumulating the area of each section and the average flow velocity. The method has an important practical value in river flow measurement under any complex water regimen.

The invention discloses metal material surface treatment equipment and a surface treatment method. The surface treatment method comprises the following steps: performing surface pretreatment on a metal matrix to form an activated matrix with target surface roughness; metal ceramic powder is directionally deposited on the surface of the activated substrate through a spraying system, and a porous substrate layer with uniform micropore channels is generated; depositing a gradient functional coating on the porous substrate layer, and dynamically adjusting the mixing proportion and the spraying angle of spraying powder to sequentially form a bottom layer bonding interface, a transition strengthening layer and a surface layer protection layer; the gradient functional coating is subjected to laser remelting treatment, and a coating interface is scanned through a multi-beam laser array, so that metallurgical bonding is achieved between the surface protection layer and the transition strengthening layer, and between the transition strengthening layer and the bottom bonding interface; in a single treatment process, multiple protection performances of high temperature resistance, corrosion resistance and fatigue resistance are synergistically improved, so that the problem of interface stripping caused by thermal expansion mismatch of a protective coating and a matrix is solved.

The invention discloses an unknown environment mapping method for a single-beam laser of aircraft, which belongs to the field of three-dimensional map reconstruction technology. Firstly, the data collected by a single-beam LiDAR is aligned with the timestamp of the stepper motor, and the obtained point cloud data is filtered and matched to obtain three-dimensional map information. The pose of the aircraft is estimated by the wheel odometer and IMU, and the loop detection is performed to reduce the cumulative error and update the three-dimensional map information in real time. The frontier search algorithm is used to determine the target point of the aircraft flight, the A* algorithm is used to plan the path trajectory, and the B-spline curve optimization algorithm is used to make the trajectory of the aircraft smoother. The control command is sent to the aircraft, and then the global three-dimensional map of the unknown environment is obtained.

The invention relates to the technical field of multi-beam laser radar'low, small and slow 'target detection, in particular to a multi-channel TDC signal processing board card and a multi-beam laser radar signal processing system. According to the multichannel TDC signal processing board card, a pulse broadening circuit, a delay chain signal sampling circuit, a coding circuit, a synchronous coarse counting circuit and a data integration generation circuit are constructed based on an FPGA (Field Programmable Gate Array); the pulse broadening circuit is used for adjusting a starting moment and an ending moment of an input pulse to obtain a pulse broadening signal; the delay chain signal sampling circuit comprises a delay chain and a D trigger array; the pulse broadening signal is interpolated and delayed by a delay chain and then a thermometer code is generated by a D trigger array; the coding circuit is used for coding thermometer codes output by the D trigger array; and the synchronous coarse counter is used for triggering the data integration generation circuit, so that the data integration generation circuit integrates and outputs the coded data output by the coding circuit. According to the invention, the problem of synchronous acquisition and identification of the transmitting signal and the echo signal in the multi-beam laser radar is solved, and the time detection and measurement precision is improved.

The invention discloses a multi-beam laser cutting device integrated with a cooling injection system, the multi-beam laser cutting device comprises a processing table and a cutting mechanism, the cutting mechanism comprises an equipment box, a beam tube is arranged outside the equipment box, the beam tube is sleeved with a fixing sleeve, the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box, and the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box. The laser cutting device comprises a fixing sleeve, a fixing ring is fixedly connected to the interior of the fixing sleeve, the interior of the fixing ring is hollow, a water inlet pipe is communicated with the interior of the fixing ring in a penetrating mode, and a water spraying pipe is communicated with the interior of the fixing ring in a penetrating mode. The problems that local hardness is increased and toughness is reduced due to the fact that metal grains are prone to coarse oxidation and the like in a heat affected zone, meanwhile, material micro-deformation is caused by thermal expansion and shrinkage, slag and an oxide layer are prone to being attached, additional working procedures are needed for cleaning, and machining precision and machining efficiency become poor are solved.

The invention provides a multi-beam laser quenching method, and relates to the technical field of quenching, the multi-beam laser quenching method comprises the step of providing a plurality of laser beam sources during quenching, and more accurate heating and cooling control is realized through dynamic adjustment of the laser beam irradiation sequence, time and power by the multi-beam laser quenching method. According to real-time surface temperature data, the uniformity and depth adjustability of a hardened layer on the surface of the workpiece are ensured, the power, irradiation time and scanning path of the laser beam are adjusted according to the real-time surface temperature data, and uniform distribution of the surface temperature of the workpiece is realized, so that the thermal stress problem in the traditional technology is reduced, the heating effect is optimized, and the uniformity of the surface temperature of the workpiece is ensured; and the cooling rate is controlled, the compactness of a hardened layer is ensured, the wear resistance and fatigue resistance of the workpiece are enhanced, the quenching process is optimized, the surface quality of the workpiece is improved, higher innovativeness and adaptability are achieved, and the method is particularly suitable for surface hardening treatment of workpieces in complex shapes or made of special materials.

The utility model discloses a three-beam laser equipment automatic side-leaning workbench, which belongs to the technical field of laser processing equipment, and comprises a conveying platform and three groups of laser cutting components, and the three groups of laser cutting components are arranged on the conveying platform along the feeding direction and are connected with the conveying platform in a sliding manner; the conveying platform comprises a base, a mounting plate, a rolling shaft and a flange assembly; the two sets of mounting plates are symmetrically fixed to the two sides of the upper portion of the base. The multiple rolling shafts are parallel to one another and form included angles with the feeding direction, the two sides of each rolling shaft are rotationally connected with the base, multiple discs are evenly arranged on the rolling shafts, and the discs on every two adjacent sets of rolling shafts are arranged in a staggered mode. A guide plate is arranged on the inner side of the end, close to the discharging end, of the push plate. A limiting rod is arranged at the end, close to the conveying platform discharging end, of the conveying platform. By means of the rolling shafts and the discs which are arranged in an inclined mode, plates are close to the mounting plate on one side; and meanwhile, the plate is limited and clamped through the flange assembly.

The invention discloses a fan unit main shaft displacement monitoring device and a working method thereof, and belongs to the technical field of concrete pole pre-embedded foundation structures. The device comprises a main shaft mounting bottom plate, a mounting table, a fan main shaft and a bearing seat assembly. A displacement monitoring sensor assembly is arranged between the bearing seat assemblies at the front end and the rear end and comprises three sets of laser correlation sensors arranged on the periphery of the draught fan main shaft, and the three sets of laser correlation sensors are located in different directions. The distance between the correlation laser straight line of each laser correlation sensor and the central axis of the fan main shaft is r + alpha + beta; the displacement change of the main shaft of the wind turbine can be monitored in real time, when the main shaft of the wind turbine deviates in the radial direction, the monitoring system can accurately judge the displacement state under the condition that the roundness error of the main shaft is eliminated, the displacement condition of the main shaft of the wind turbine can be more timely and accurately detected, and stable operation of the wind turbine is guaranteed.

The invention discloses a composite laser cutting device which comprises a first light source, a second light source, a first reflecting mirror, a spectroscope, a focusing mirror, a first energy distribution adjusting assembly and a second energy distribution adjusting assembly, and further discloses a composite laser cutting method which comprises the following steps that a light beam is emitted, and energy distribution of the composite light beam is controlled. The method has the beneficial effects that distribution control and application of multi-level energy are achieved, and the efficiency and quality of composite beam laser cutting can be rapidly improved by controlling the energy density of the whole body and the center. The laser cutting machine can be well applied to laser cutting, is particularly suitable for cutting thick plates and composite plates, can cut transparent materials with high efficiency, and can overcome the technical problem that a laser cutting machine in the prior art is difficult to effectively cut the transparent materials and superhard materials.

The application provides a robot tool coordinate system calibration device and method. The robot tool coordinate system calibration device comprises a control device configured to be in communication connection with a robot; a laser device, the laser device comprising a laser emitting module and a laser receiving module, both of which are in communication connection with the control device, the laser emitting module being configured to be capable of forming a cross-shaped laser beam, the laser receiving module being capable of receiving the cross-shaped laser beam, two first laser beams forming the cross-shaped laser beam being perpendicular to each other. The technical scheme of the application can solve the problem of low calibration accuracy and efficiency of the calibration mode of the prior art.

The invention discloses a machining method for a laser quenching cutter point, and belongs to the technical field of metal surface treatment and cutter machining. According to the method, efficient and uniform quenching of the cutter point is achieved through multi-beam laser composite scanning and artificial intelligence real-time feedback control; the method comprises the steps of workpiece pretreatment, multi-beam laser scanning, real-time monitoring and feedback control, post-treatment and quality evaluation. The method has the effects of reducing heat affected zones, improving hardening uniformity and reducing energy consumption.

The invention discloses a laser light source-based baffle-free integrated automobile headlamp optical system, which comprises a low-beam laser light source, a high-beam laser light source, a low-beam focusing reflector, a high-beam reflection cup and a high-beam and low-beam light distribution lens, the high-beam and low-beam laser light source comprises a blue laser diode, a laser collimating lens, a laser focusing reflector and a curved reflector embedded with yellow fluorescent powder, and the low-beam focusing reflector and the high-beam reflection cup are used for reflecting light to the lower half portion and the upper half portion of the high-beam and low-beam light distribution lens respectively. The high-beam and low-beam light distribution lens is a double-free-form-surface lens of a segmented structure, the upper half portion of the lens is a two-section symmetrical fan-shaped lens and used for high-beam illumination, and the lower half portion of the lens is a four-section fan-shaped lens and used for low-beam illumination. According to the baffle-free dual-light integrated structural design, the weight of the headlamp can be effectively reduced, the size is reduced, and the system stability is improved.

A system for drying a battery electrode coating includes two laser diode arrays and a laser module. Each laser diode array emits multi-beam laser radiation to an edge region including a respective edge of a coating lane deposited on a metal foil. The laser module emits a diverging laser beam to an interior area of the coating lane between the two edges. The intensity distribution of the diverging laser beam at the coating lane spans a gap in the widthwise dimension between respective intensity distributions of the multi-beam laser radiation from the two laser diode arrays. The use of laser diode arrays to perform the edge drying allows for tailoring the intensity distribution of the combined laser irradiation to dry the coating lane without over-drying and delaminating the edges. The use of a single, diverging laser beam in the interior area allows for optimizing affordability and energy efficiency.

This invention provides a multi-aperture coherent combining system with split-path phase modulation detection, relating to the field of optoelectronic technology. The system, along the optical path, sequentially includes a split-beam laser source module, a signal generation module, a multi-aperture emission module, a signal demodulation module, and a marker feedback module. The signal generation module receives multiple split-beam lasers and generates different modulation signals, using these signals to modulate different split-beam lasers. The signal demodulation module, located at the optical axis of a far-field target, demodulates the modulated split-beam lasers in the combined beam to obtain split-beam lasers deviating from the optical axis. The marker feedback module marks the deviated split-beam lasers and feeds them back to the optical axis processing module connected to the split-beam laser source module, thereby enabling the detection of far-field spots. This invention solves the problems of low compensation accuracy and efficiency in closed-loop correction during multi-aperture coherent combining.

The utility model discloses a laser device which comprises a laser, a light splitting assembly, a plurality of attenuation modules, a plurality of focusing assemblies and a light emitting reflector. The light splitting assembly is arranged at the downstream of the laser and is used for splitting a light beam generated by the laser into multiple light beams; the plurality of attenuation modules are in one-to-one correspondence with the plurality of light beams, and the attenuation modules are used for attenuating the light beams; the multiple focusing assemblies are in one-to-one correspondence with the multiple attenuation modules. The light-emitting reflector is arranged on the downstream of the focusing assemblies, and the multiple sets of focusing assemblies are all used for focusing the light beams on the light-emitting reflector so that the light-emitting reflector can reflect multiple parallel scribing laser beams. Laser beams generated by the laser device form multiple light beams through the light splitting assembly, the light beams are reflected and output through the light emitting reflector after being attenuated and focused, the multiple scribing laser beams reflected and output by the light emitting reflector are parallel to one another, and the multiple scribing laser beams can scribe a film at the same time. Therefore, the scribing efficiency is effectively improved. The utility model further discloses scribing equipment.

The invention discloses an integrated multi-beam device and method for aircraft part laser preheating, polishing and strengthening, and the device comprises a computer control system, a laser preheating device, a picosecond pulse laser device, an ultra-strong pulse laser device and a workbench, wherein the computer control system is used for controlling the movement of the laser preheating device, the ultra-strong pulse laser device, the picosecond pulse device and the workbench; the laser preheating device is used for focusing large-light-spot continuous laser beams on the surface of the aircraft part loaded on the surface of the workbench, and preheating of the surface of the aircraft part is achieved. The picosecond pulse device is used for forming small light spots which are focused on the preheated surface of the aircraft part to polish the surface of the aircraft part; the ultra-strong pulse laser device is used for forming high-energy small light spots which are focused on the polished surface of the aircraft part, and laser shock peening of the surface of the aircraft part is achieved. The machining efficiency and precision of aircraft parts can be effectively improved, and the manufacturing cost is reduced.

The application relates to a laser welding system, a laser welding control method, a device and a storage medium, and belongs to the technical field of welding. The system comprises a workbench, a backing plate placed on the workbench, the backing plate being used for placing at least two first plates and second plates which are mutually butted, and the first plates and the second plates being of different thicknesses; and a laser welding device with a scanning function, which performs laser scanning along a direction perpendicular to a welding direction in a welding process to weld butt joints of the first plates and the second plates; the laser welding device is different in laser output power corresponding to at least two different laser scanning positions; the problem that, when double-beam laser is used to perform laser welding on plates of different thicknesses, welding defects such as incomplete fusion and pores exist due to the fact that laser energy distribution is not flexible enough can be solved; and high-quality welding of butt joints of plates of different thicknesses can be realized by controlling laser output power of different laser scanning positions while scanning.

The invention relates to the field of laser cutting equipment, in particular to a moving beam laser cutting machine. The cutting machine comprises a shell, a first lathe bed, a first workbench, a first driving device, a cutting device, a dustproof assembly and two first guide rails, a working space is defined by the shell, the two first guide rails are arranged on the first lathe bed in parallel, and the first driving device drives the first workbench to move along the first guide rails so as to enter and exit the working space; the dustproof assembly comprises an exhaust fan, an exhaust pipe and two side walls, the two side walls extend in the length direction of the first guide rail and define a cutting area, the top edges of the side walls are higher than the top face of the first guide rail, and a plurality of dust suction holes communicating with the cutting area are formed in the exhaust pipe. And one end of the exhaust pipe is connected with the exhaust fan. By arranging the dustproof assembly, the cutting area is defined by the two side walls, dust is prevented from entering the first guide rail from the cutting area, and pollution of the dust to the first guide rail is reduced.

The invention discloses a self-delay double-target collision plasma generating device and method, and belongs to the technical field of plasmas, the self-delay double-target collision plasma generating device comprises a laser system, a vacuum chamber and a target material assembly arranged in the vacuum chamber, and the target material assembly comprises a first composite target and a second plane target in the laser propagation direction; the first composite target comprises a film substrate and a first tin layer; the second planar target comprises a second tin layer; and a preset distance is set between the thin film substrate and the second tin layer. The laser system emits a single beam of pulse laser to be focused on the first composite target, ablates the first tin layer to generate first plasma and breaks down the film substrate, transmitted laser energy ablates the second tin layer to generate second plasma, and the first plasma and the second plasma collide oppositely to form a stagnation layer. The single-beam laser and a special composite target material structure are utilized, self-delay plasma collision is achieved through a physical mechanism, the system structure is simplified, and the constraint performance of a plasma stagnation layer is improved.

The utility model relates to the field of laser welding, in particular to a precise positioning double-beam laser welding auxiliary platform. Comprising a rack, a placing table, a driving assembly, a welding head, a first electric sliding rail, a partition plate, a fixing base, a first sliding rod, a first elastic piece, a limiting plate and the like. A placing table and a driving assembly are arranged on the upper side of the rack, two welding heads are installed on the driving assembly, first electric sliding rails are arranged on the front side and the rear side of the placing table correspondingly, sliding blocks of the two first electric sliding rails are connected with the front end and the rear end of the partition plate correspondingly, two fixing bases are arranged on the left portion and the right portion of the upper side of the rack correspondingly, and first sliding rods are arranged on the fixing bases in a sliding mode. Through the design of the partition plate, the limiting plate, the first elastic piece and other components, it is guaranteed that a welding piece does not displace in the horizontal direction, deviation caused by vibration or thermal deformation in the welding process is avoided, and welding precision is improved.

The invention belongs to the technical field of remote sensing, and relates to an atmospheric calibration instrument data processing method using active and passive cooperative remote sensing, which comprises the following steps: S1, carrying a synchronous atmospheric calibration instrument integrating a multispectral polarization camera and a multi-beam laser radar on the same satellite with a high-resolution imaging load to realize complete coverage of an observation area and time-space synchronous observation, acquiring multispectral polarization data and laser radar data; s2, on the basis of laser radar data, atmospheric vertical profile parameters are inverted through a parameter inversion method; s3, based on the multispectral polarization data, combining with a ground surface polarization reflectivity model to invert aerosol related parameters; s4, performing space-time matching and uniformity judgment on the laser radar data and the multispectral polarization data, and screening effective synchronous observation points; s5, collaborative inversion and iterative optimization are carried out based on the active and passive data of the synchronous observation points, and geogas three-dimensional space-time distribution parameters are obtained; and S6, performing atmospheric correction on the remote sensing data of the high-resolution imaging load.

The invention belongs to the technical field of laser surface modification processing, and particularly relates to a femtosecond-nanosecond double-beam laser cooperative shock peening method, which comprises the following steps of: taking a nanosecond laser and a femtosecond laser as shock peening light sources at the same time, and combining the two beams of laser through a beam combiner, focusing on the surface of the workpiece through a focusing optical system for impact strengthening; when the workpiece is subjected to shock peening, the time delay between the femtosecond pulse and the nanosecond pulse is controlled through the time delay device, so that the femtosecond laser reaches the surface of the workpiece before the nanosecond laser; the femtosecond laser firstly ionizes a material on the surface of a workpiece to form plasma, and realizes strong absorption of subsequent nanosecond laser, so that the depth of an influence layer of nanosecond impact strengthening can be achieved without an absorption layer and a water restraint layer. The method has the advantages of femtosecond laser shock peening, that is, a restraint layer and an absorption layer are not needed, and the method has the advantage of nanosecond shock peening, so that the depth of a deep influence layer can be realized.

A low-power-consumption derailment detection apparatus for railway freight cars, said apparatus comprising a detection module, a diagnosis module, an actuation module, a power management module and a storage battery; the power management module is mounted near a center plate of a car body, and is used for controlling the storage battery to supply power to the derailment detection apparatus when the vibration acceleration of the car body is greater than a preset threshold value, and controlling the derailment detection apparatus to power off when the vibration acceleration of the car body is not greater than the preset threshold value; the detection module is used for detecting, by means of through-beam laser technology, the positions of wheel sets relative to the car body, and transmitting a detection result to the diagnosis module; the diagnosis module is used for logically determining, on the basis of the detection result, whether a car has derailed, when detecting that the car has derailed, outputting a derailment signal to the actuation module, and when detecting that the car has not derailed, controlling the derailment detection apparatus to power off after a system operates for a short period of time; and the actuation module is used for controlling, after receiving the derailment signal, the train to perform emergency braking. The derailment detection apparatus has a structure that is conveniently assembled and disassembled; and all devices are mounted on a car body, and thus a connecting ring between the car body and a bogie is omited, thereby greatly reducing the workload of mounting and dismounting the automatic derailment detection apparatus during lifting and lowering of the car. The present application also relates to a detection method.

An I-beam laser cutting method, a laser cutting machine, electronic equipment and a storage medium are used for cutting a lingual plate, the I-beam comprises a web and two wing plates, and the method comprises the steps that a laser cutting head conducts first cutting on the wing plates to be cut from the outer side of the I-beam and conducts second cutting on the wing plates to be cut from the inner side, above the web, of the I-beam; the joint of the to-be-cut wing plate and the web plate is subjected to second cutting, the cutting paths of the first cutting and the second cutting stretch across the to-be-removed area of the to-be-cut wing plate in the extending direction of the web plate, the first light direction and the second light direction intersect in the connecting area corresponding to the joint, and the to-be-removed area of the to-be-cut wing plate intersects with the to-be-removed area of the to-be-cut wing plate. The side edge of the tongue plate is cut, so that the side edge of the tongue plate is flush with or contracts inwards relative to the inner side face of the to-be-cut wing plate in the direction perpendicular to the inner side face of the to-be-cut wing plate. Therefore, the cutting efficiency of the tongue plate is improved, and the cutting difficulty is reduced.