726 results about "Laser detection" patented technology

The device comprises a box body and a measuring assembly arranged in the box body, the measuring assembly comprises a laser emitting unit, a lens unit, a focal length adjusting unit and a height adjusting unit, the height adjusting unit is arranged on the upper side in the box body, and the focal length adjusting unit is arranged at the bottom of the height adjusting unit. The laser emitting unit is arranged at the bottom of the focal length adjusting unit, and the lens unit is arranged at the bottom of the focal length adjusting unit and located on one side of the laser emitting unit. Through the collaborative design of the convex lens and the laser emission unit, the optical path reversibility principle of the convex lens is utilized, and dependence on a small-size and low-emission-port-height special-specification laser emitter is not needed. Even if a laser transmitter with a conventional size is adopted, refracted laser can be infinitely close to the ground, and tiny protrusions can be accurately recognized and measured.

The invention belongs to the technical field of welding equipment, and particularly relates to an intelligent high-speed laser welding device for a longitudinal welded pipe, which comprises a rack, a high-precision clamping mechanism, a multi-degree-of-freedom motion platform, a laser welding head and an intelligent control system. The clamping mechanism adopts hydraulic pressure to drive an arc-shaped clamping plate to realize self-adaptive centering and flexible clamping of the pipe fitting; an X-direction module of the motion platform adopts a servo motor to be matched with a synchronous belt (or a ball screw) for transmission, and a Y-direction module is driven by a hydraulic cylinder, so that precise track control of the laser welding head is jointly realized; the intelligent control system integrates visual tracking of welding seams, infrared monitoring of a molten pool and laser detection of deformation, and welding parameters and motion trails are dynamically adjusted by calculating a welding quality coefficient in real time and based on a threshold value and a residence criterion. According to the method, the problems of welding seam tracking lag, unstable molten pool state, thermal deformation compensation deficiency and the like in high-speed welding are solved, and self-adaptive optimization and full data tracing in the welding process are achieved.

A surface scanning tool and methods of using a surface scanning tool to determine a surface shape of a tool. In embodiments, the surface scanning tool includes a laser, a detector, and a signal analysis module. The laser sends a beam of light that is reflected off a bottom surface of the tool. The detector receives the reflected beam of light and sends the reflected beam of light signals to a signal analysis module. The signal analysis module determines a surface shape of the bottom surface and triggers mitigation actions. In alternative embodiments, the surface scanning tool includes a camera and a signal analysis module. The camera takes a picture of the bottom surface of the tool and sends the image to the signal analysis module. The signal analysis module determines the surface shape of the bottom surface and triggers mitigation actions.

The invention relates to a sensor cleaning control method of an unmanned vehicle and a related device thereof, a sensor of the unmanned vehicle is provided with a pollution monitoring unit, and the method comprises the following steps: obtaining multi-element pollution data collected by the pollution monitoring unit; wherein the pollution detection unit at least comprises an image acquisition module and a laser detection module; the multi-element pollution data comprises image data acquired by the image acquisition module and laser data acquired by the laser detection module; the image data and the laser data are analyzed to obtain a pollution result of the sensor, and the pollution result is used for indicating the pollution degree of the sensor; when the pollution result indicates that the sensor is in a pollution state, determining a cleaning strategy based on the multi-element pollution data; and controlling a cleaning system of the unmanned vehicle to clean the sensor according to the cleaning strategy. According to the scheme provided by the invention, the pollution type and degree of the sensor can be accurately identified, a targeted cleaning strategy is adopted, and the cleaning efficiency and the cleaning capability are improved.

The invention discloses a composite aluminum foil current collector coating thickness detection device, and relates to the technical field of coating thickness detection, the composite aluminum foil current collector coating thickness detection device comprises a thickness detection member, the thickness detection member comprises an upper wheel set, a lower wheel set, a detection rack and a laser detector, and the upper wheel set and the lower wheel set are respectively penetrated by an upper shaft and a lower shaft; the detection frame and the lower shaft rotate synchronously to change the inclination angle of the laser detector, and the tensioning wheel can ascend and descend to be used for adjusting the tightness of the composite aluminum foil on the lower wheel set. The two sides of the aluminum foil are clamped and the aluminum foil is transversely stretched, so that the aluminum foil is flatly attached to the measuring wheel. It is ensured that the aluminum foil is in a flat, tight and vibration-free state when passing through a laser measurement point, which is the premise of obtaining accurate measurement data. The whole laser detection frame can be used as a whole, the lower shaft supported by the aluminum foil synchronously rotates to change the angle of incident light, so that a specular reflection light path of ambient light deviates from the laser receiver, laser beams can still keep nearly vertical incidence, and reflected light of the laser beams can be effectively received.

The present disclosure relates to the technical field of optoelectronics, and provides a chip for laser detection, a LiDAR, a vehicle, and a photodiode. The chip for laser detection comprises a substrate, an epitaxial layer, an operating circuit, and a protection circuit. The epitaxial layer is formed over the substrate. The operating circuit is formed on the epitaxial layer. The operating circuit comprises a first photodiode and is configured to detect incident laser at an operating voltage. The protection circuit is formed on the epitaxial layer. The protection circuit is connected in parallel to the operating circuit and comprises a second photodiode. The turn-on voltage of the protection circuit is greater than the operating voltage, and the impedance of the protection circuit when it is turned on is less than the impedance of the operating circuit when it is turned on. The present disclosure can reduce the degree of damage caused by electrostatic discharge to operating circuits in chips.

The invention discloses automatic detection equipment and method for the comprehensive appearance of a product, the detection equipment comprises a feeding mechanism, a detection platform and a discharging mechanism, and the feeding mechanism comprises a feeding conveying line and a feeding robot; the detection platform comprises a multi-station turnover conveying module, an omni-directional laser detection module, a double-sided CCD detection module and a thickness detection module, and the multi-station turnover conveying module is used for receiving products transferred by the feeding robot and can sequentially move the products to the omni-directional laser detection module, the double-sided CCD detection module and the thickness detection module; the discharging mechanism comprises a discharging robot, a tray storage bin and a discharging conveying line. The discharging robot is used for grabbing products from the multi-station turnover conveying module and correspondingly placing the products on trays in the tray storage bin or the discharging conveying line. According to the invention, the whole process automation from the feeding of the to-be-detected product to the classified discharging after the detection is completed can be realized, and the whole process continuity and the intelligent level are high.

A signal filtering and concentration inversion method for infrared laser detection, implemented through a signal filtering and concentration inversion system for infrared laser detection, includes the following steps: S1, building a transmissive-type infrared laser gas detection system at an on-site detection location, setting fixed parameter information, and establishing normal communication on an optical detection part and obtaining a first-harmonic signal; S2, performing amplification-processing on the first-harmonic signal to obtain a second-harmonic signal, and introducing the second-harmonic signal into a laser filtering-processing model to obtain a denoised second-harmonic signal; S3, inputting the first-harmonic signal and the denoised second-harmonic signal into a concentration inversion model to obtain a concentration signal of a to-be-detected gas; and S4, determining, based on the concentration signal of the to-be-detected gas, whether a hazardous gas limit has been exceeded at the on-site detection location.

The invention discloses a pressure vessel weld reinforcement automatic detection device and detection method, and relates to the technical field of weld detection. The automatic detection device for the surplus height of the welding seam of the pressure vessel comprises a pressing plate which can move downwards in the vertical direction; a plurality of arc-shaped clamping plates are evenly arranged on the inner side of the positioning ring in the circumferential direction, and the arc-shaped clamping plates are stressed to move inwards in the downward pressing process of the pressing plate, so that the outer wall of the connecting pipe is clamped; and the flexible track is arranged on the periphery of the connecting pipe in a surrounding mode, a laser detector is arranged on the flexible track, and the laser detector can move in the circumferential direction of the flexible track and is used for conducting continuous scanning detection on the excess weld metal of the saddle-shaped welding seam. The pressing plate, the positioning column, the limiting plate and the arc-shaped clamping plate form a multidirectional cooperative positioning and clamping mechanism, so that the integrated constraint of axial pressing, radial centering and circumferential limiting of the connecting pipe is realized, and the relative positioning precision and the overall structural stability between the detection device and the connecting pipe are remarkably improved.

The invention discloses a pyrolytic particle detection device, which relates to the technical field of fire detection and comprises an air pump, a heating cavity, a conducting electromagnetic valve, a refrigeration cavity, a laser detection cavity, an exhaust electromagnetic valve, a weak photoelectric pulse signal processing unit, a comprehensive control and data processing unit and an RS485 communication unit. The sucking pump, the heating cavity, the conduction electromagnetic valve, the refrigeration cavity, the laser detection cavity and the exhaust electromagnetic valve are sequentially connected through 8 mm silica gel air pipes to form a complete air path system; the invention provides a pyrolytic particle detection device which can accurately detect pyrolytic particles in air in real time, can digitally display the content of the detected pyrolytic particles, can avoid interference of environmental factors such as dust, water mist, strong light and electromagnetism, and provides an effective detection device for extremely early warning of a fire hazard. And sufficient favorable time for several hours is provided to control combustion conditions, so that event expansion is avoided.

The invention provides a circuit for laser detection, a laser radar and a carrier, and relates to the technical field of photoelectricity. The circuit for laser detection comprises a working circuit and a protection circuit connected in parallel with the working circuit. The working circuit comprises a first photodiode and is configured to detect echoes under working voltage, the protection circuit comprises a second photodiode, doped ions of the second photodiode and doped ions of the first photodiode are distributed in the longitudinal direction, and the break-over voltage of the protection circuit is larger than the working voltage. And the impedance of the switched-on protection circuit is smaller than that of the switched-on working circuit. According to the invention, the degree of damage to the working circuit caused by electrostatic discharge can be reduced.

The invention relates to the technical field of laser measurement, and provides a laser detection mechanism for a steel pipe fitting, which comprises a workbench and a mounting frame, a mounting frame is mounted on one side of the top end of the workbench, a three-jaw chuck is mounted on one side of the mounting frame, a steel pipe is mounted on one side of the three-jaw chuck, a mounting box is arranged at the top end of the workbench, and a dust removal structure is arranged on one side of the steel pipe. According to the cleaning device, a brush roller is driven to rotate through a pinion in the rotating process of a large gear, so that dust on the surface of a steel pipe is cleaned, a suction fan is started to generate suction force in the cleaning process of the brush roller, and the swept dust is sucked through a dust suction seat; and the dust collection head is arranged at the bottom end of the steel pipe fitting and moves along with the movement of the connecting block, so that secondary cleaning of dust on the surface of the steel pipe fitting is realized, the cleaning work of the dust on the surface of the steel pipe fitting is completed, and the detection effect is not influenced by the dust on the surface of the steel pipe fitting during detection.

The application discloses a color-coated plate coating film thickness detection device and method based on laser measurement, and relates to the technical field of detection. The color-coated plate coating film thickness detection device based on laser measurement comprises a conveying mechanism which is installed at the bottom of a detection table and is used for synchronously unwinding and winding the color-coated plate. Two first mounting members are fixed on the detection table. A removing mechanism for removing burrs on the surface of the color-coated plate is installed on the first mounting member. A second mounting member is fixed on the detection table and is located at the tail end of the conveying of the color-coated plate. A plurality of laser detection devices for detecting the coating thickness of the color-coated plate are installed on the second mounting member. A pressing assembly for avoiding the bulging of the color-coated plate during conveying is also installed on the second mounting member. The spiral pushing mode of the application is similar to the pushing and pulling force during the cutting of a kitchen knife. Therefore, the cutting force only acts on the burrs, and the problem that the burrs and the normal coating near the burrs are lifted together does not occur.

The invention discloses ceramic surface roughness detection equipment, and relates to the field of ceramic surface detection devices.The ceramic surface roughness detection equipment comprises a fixing frame, a workbench is fixed to the fixing frame, a displayer is installed on the workbench, an air cylinder is further fixed to the workbench, a carrying table is arranged above the workbench, and a camera obscura is fixed to the left side of the workbench; and the limiting mechanism is used for clamping and limiting the ceramic plate. According to the ceramic surface roughness detection equipment, the detection mechanism with the laser irradiation range adjustment function is adopted, the width of a ceramic plate can be automatically adapted to adjust the laser detection range in the ceramic plate detection process, it is guaranteed that the laser detection range is automatically matched with the width of the ceramic plate, and it is guaranteed that light spots completely cover the surface of the to-be-detected ceramic plate; the reflection interference caused by the fact that laser overflows to a carrier (such as a metal or glass carrier) is avoided, the signal-to-noise ratio (SNR) of scattered signals is improved by 40% or above, the Ra measurement error is controlled within + / -2%, and the accuracy of detection data is effectively guaranteed.

The invention discloses a device and method for overturning and quality inspection of multi-specification rectangular tubes, and the method comprises the steps: constructing a complete square tube precise positioning and overturning detection system through the cooperative work of a square tube automatic grabbing workstation, an overturning device, an end part limiting device, a jacking centering device, a laser detection system and a visual detection system; according to the system, full-automatic grabbing, precise positioning and posture adjustment of the square pipes of multiple specifications can be achieved, meanwhile, comprehensive collection and analysis of product data are completed, and therefore the quality inspection efficiency and the detection precision are remarkably improved, and a scientific basis is provided for production process optimization. The technical bottleneck of existing equipment in square tube quality inspection and production is overcome, the universality, the automation level and the detection capacity of the equipment are improved, and the high-standard requirement of the building manufacturing industry for the quality of components can be met.

The application relates to the technical field of laser detection tooling, and particularly discloses a thickness detection mechanism for an electromagnetic shielding sputtering film coating layer, which comprises a rack and a machine shell fixed to the outer side of the top end of the rack; further comprises a lifting plate which is installed in the middle part of the inner side of the machine shell in a lifting manner through a lifting adjusting mechanism, a first rotating disc is rotatably installed on the inner side of the lifting plate, and the top surface of the first rotating disc is fixed with two groups of upper laser measuring assemblies; a fixing frame is installed on the middle part of the top surface of the rack in a sliding manner through a sliding adjusting mechanism, a second rotating disc is rotatably installed on the inner side of the fixing frame, and the bottom surface of the second rotating disc is fixed with two groups of lower laser measuring assemblies corresponding to the upper laser measuring assemblies. The thickness detection mechanism for the electromagnetic shielding sputtering film coating layer can be adaptively adjusted and matched, can be used in sample and continuous detection double scenes through double-face synchronous laser measurement and rotating adjustment, and can complete coating thickness detection with high precision and high efficiency.

The application discloses a kind of component wear detection mechanisms for water pump failure, it is related to water pump fault detection technical field, including equipment shell, the inside of equipment shell is provided with the placing rack for placing water pump to be detected, and equipment shell is also provided with drive assembly, and drive assembly is provided with two groups of laser detector, and the detection operation of water pump is realized by two groups of laser detector up and down.This component wear detection mechanisms for water pump failure, when roller rolls to the side of the outward protrusion of resistance frame, the fixed magnetic ring fixedly connected outside roller also synchronously moves to the position corresponding with swing magnet, under the driving of magnetic force, swing magnet can drive swing plate and rotating shaft to rotate, the rotation of rotating shaft can drive the synchronous swing of cleaning pipe on its upper end, so that the tube opening of cleaning pipe can be back and forth in a certain angle range, so that the airflow of high-speed ejection can cover wider cleaning area.

The utility model discloses a pulse laser device in industrial CR, comprising a conveyer belt, the top of the conveyer belt is provided with a support frame used for detection, the support frame is internally provided with an adjusting mechanism used for movement, and the adjusting mechanism is internally provided with a detection mechanism; by means of the arrangement of the detection mechanism, when the laser detector detects an electronic component, an air pump can work to inflate the interior of the first shell, and when gas enters the interior of the first shell, the gas is injected into the interior of the second shell by means of communication of a rotary connecting piece and the second shell, so that the detection efficiency is improved. The laser detector is arranged in the dustproof part, air is blown to the detection lens of the laser detector through the first spray head, the second servo motor works to drive the gear to rotate while the first spray head blows air, the second shell is driven to rotate through meshing connection of the gear and the gear ring, and the dustproof effect of the dustproof part is further improved.

The invention discloses a compact InGaAs detector with a built-in current-voltage conversion and conditioning circuit, a laser detection device and a laser detection method, which are mainly used for solving the technical problems that the existing InGaAs detector cannot directly and stably output a voltage signal and needs to be externally connected with a complex current-voltage conversion and conditioning circuit to obtain the voltage signal. The invention relates to a compact InGaAs detector with a built-in current and voltage conversion and conditioning circuit, which comprises a shell and a light window, the shell and the light window form an airtight cavity, and an InGaAs chip, the current and voltage conversion circuit, the conditioning circuit and a diaphragm are arranged in the airtight cavity. The InGaAs chip converts a received optical signal into a current signal, the current and voltage conversion circuit converts the current signal into a voltage signal, and the conditioning circuit conditions the voltage signal and outputs a conditioning signal Vout. The technical problem that a common InGaAs detector directly outputs a current signal is solved.

The utility model discloses a high-temperature resistant release film coating device capable of automatically detecting flatness, which relates to the technical field of coating machines, and comprises a main frame body, a leveling module is arranged on the main frame body, a fixing hole is formed in the main frame body, a fixing frame is fixedly connected in the fixing hole, one side of the fixing frame is fixedly connected with a laser detector, and the other side of the fixing frame is fixedly connected with a base. A communicating bin is fixedly connected to the bottom of the fixing frame, a plurality of spray heads are arranged at the bottom of the communicating bin at equal intervals, the leveling module comprises a plurality of sliding rods, and thin rods are fixedly connected to the two ends of each sliding rod. The high-temperature-resistant release film coating device capable of automatically detecting the flatness, disclosed by the utility model, has the advantages that release films with different thicknesses can be adaptively and stably clamped, conveying deviation and deformation are prevented, and meanwhile, the release films can be pulled and smoothed before detection; the condition that the release film is wrinkled or loosened due to conveying or equipment operation is avoided, and the accuracy of flatness detection of the release film body before coating is improved.

The utility model discloses a laser detection instrument battery box body welding tool which comprises a bottom plate, installation holes are formed in the four corners of the top of the bottom plate, a front positioning assembly is installed on the lower right side of the top of the bottom plate, and a rear positioning plate is installed on the upper left side of the top of the bottom plate. A pressing assembly is installed on the top of the bottom plate in the direction of the perpendicular line of the front positioning assembly. Before the battery box body is installed, the rapid pressing clamp is opened to the maximum, then the battery box body is installed on the top of the bottom plate, in the installation process, it is guaranteed that the right-angle face of the battery box body is completely attached to the rear positioning plate, and the bottom of the top special-shaped position is pressed on the fixing plate; and one side of the special-shaped position is matched with one side of the limiting plate to form limiting, so that the product is clamped when the quick pressing clamp is pressed, and the clamping stability of the battery box body is improved.

The utility model relates to a device for detecting thickness by laser. The device comprises a base, a supporting piece arranged on the base, a first rod arranged on the supporting piece, a detection piece for detection, a bearing piece for bearing a workpiece and a module for driving the bearing piece to move, the bearing part is arranged at the acting end of the module; the detection piece is arranged on the first rod; two groups of first rods and two groups of detection pieces are oppositely arranged; and the bearing piece is arranged between the two groups of detection pieces. The problems that after a laser thickness gauge is fixed, an object which cannot be measured cannot be changed in position relative to a laser emission point, so that only the thickness of a single part of the object can be measured, and when other parts need to be measured, the relative position of the laser emission point needs to be changed after fixation is removed, and the measurement is inconvenient are solved. Therefore, the time required for measurement is increased, and the measurement efficiency is reduced.

This application relates to an integrated MEMS two-dimensional scanning detection system, a capacitance angle measurement method, and an apparatus. The integrated MEMS two-dimensional scanning detection system includes: a laser detection component and a magnetic circuit component disposed below the laser detection component. The laser detection component is an integral structure formed by connecting a scanning lens to a riveting area via a Y-shaped two-dimensional rotation axis. The magnetic circuit component is a hollow structure enclosed by two types of magnetic circuit modules, which are used to generate magnetic fields in different directional dimensions. The riveting area of ​​the laser detection component is connected to the magnetic circuit modules in the magnetic circuit component. The scanning lens is located in the cavity enclosed by multiple magnetic circuit modules, and under the drive of magnetic fields in different directional dimensions, the Y-shaped two-dimensional rotation axis drives the scanning lens to rotate in the corresponding directional dimension within the cavity. This integrated MEMS two-dimensional scanning detection system can reduce the overall size of the electromagnetic scanning mirror.

This invention discloses a device for detecting the flatness of a semiconductor surface using laser, relating to the field of semiconductor laser detection technology. It includes a base, with a laser detector hinged to one side of the top of the base, and an electric track mounted on the other side of the top of the base. A movable stage is mounted on the electric track, and a detection stage is hinged to the middle of the upper surface of the movable stage. A bracket is mounted in the middle of the upper surface of the base, and a light-shielding transmission assembly is mounted on the bracket. This application uses the light-shielding transmission assembly for transmission and synchronous light-shielding operations. An electric telescopic rod pushes a connecting block to move, thereby causing a light-shielding plate to move downwards until it blocks the detection stage. Simultaneously, as the connecting block moves, a pressure rod on its side presses against a hydraulic rod, causing the hydraulic rod to rotate the laser detector, bringing the laser detector into contact with the light-shielding plate, and then performing semiconductor surface flatness detection.

The utility model relates to the technical field of Fourier transform infrared spectrometer laser calibration, and discloses a laser calibration platform which comprises a laser detection box placed on a table board; the limiting structure comprises a first limiting part and a second limiting part, the first limiting part comprises an adjusting plate arranged in the laser detection box, a light-transmitting plate is fixedly mounted in the adjusting plate, two groups of protective frame plates are fixedly mounted at the top of the light-transmitting plate, and two groups of first electric push rods are arranged in the protective frame plates; sliding blocks are fixedly installed at one ends of the first electric push rods, and a limiting plate is fixedly installed between every two sets of sliding blocks. The second limiting part comprises two groups of first magnetic strips fixedly mounted at the top of an adjusting plate, and a protective cover plate is arranged at the top of the adjusting plate, so that the purpose of limiting and fixing the medicine is achieved, the problem of medicine position deviation is solved, the medicine scanning and detecting effects are improved, and the use stability of the device is improved.

The present invention relates to the field of large-field-of-view scenes. Provided is a nonlinear optical large-field-of-view imaging system, comprising a light source system, a laser scanning system and a laser detection system, wherein the light source system is configured to emit laser; the laser scanning system comprises a focusing lens and a galvanometer, wherein the galvanometer is located between the focusing lens and a sample to be detected, the focusing lens is configured to focus the laser on said sample, and the galvanometer vibrates according to a preset scanning angle so as to realize scanning of a laser focus on said sample; and the laser detection system comprises a compound-eye collection structure and a detector, wherein the compound-eye collection structure comprises a plurality of individual lenses which are closely arranged, optical signals generated by said sample are incident on the compound-eye collection structure, and the detector is configured to detect the optical signals collected by the compound-eye collection structure. The present invention can expand a laser scanning imaging range, can ensure that a laser beam always propagates along the optical axis of the focusing lens, and can comprehensively collect signals excited across the entire scanning field of view, thereby improving the efficiency of large-field-of-view imaging and increasing the signal intensity.

The invention belongs to the technical field of multi-detector composite detection, and more particularly relates to an infrared composite detection information processing system and method, the infrared composite detection information processing system is constructed through a DSP processor, an SOC processor, an infrared signal acquisition circuit and a laser signal acquisition circuit, the DSP processor and an FPGA circuit do not need to be additionally added, and the system is simple in structure and convenient to operate. Therefore, the accuracy of the detection result can be guaranteed, and the hardware cost and the operation power consumption of the system can be reduced; a laser signal acquisition circuit is constructed through a gain control circuit, a high-speed ADC acquisition circuit and a buffer amplification circuit, the gain control circuit and the buffer amplification circuit can be effectively utilized to filter interference noise of a target pulse signal of a laser detector, and high-speed synchronous acquisition and digital conversion of the target pulse signal can be realized in cooperation with the high-speed ADC acquisition circuit. Therefore, the SOC processor can obtain the laser detection result more accurately.

This invention discloses a method and system for detecting micro-UAVs based on target reflectivity, solving the problem of low-reflectivity targets being difficult to detect in complex environments in existing technologies. It achieves the identification of micro-UAVs by combining active laser detection with target reflectivity feature analysis. The method includes: emitting pulsed laser light towards the target area; synchronously acquiring target signals through dual detectors with a common optical path design to obtain target geometric features and reflectivity intensity signals; calculating the original reflectivity based on the reflectivity intensity signals and obtaining target distance information; correcting the original reflectivity based on the target distance information to obtain a corrected reflectivity value; generating target motion features through multi-frame temporal analysis; and fusing the corrected reflectivity value, target geometric features, and target motion features based on a fusion strategy to construct a comprehensive target feature vector; inputting the comprehensive target feature vector into a classifier to output the identification result of the micro-UAV.

The invention discloses an elevator door flatness laser detection device and method, and relates to the technical field of elevator detection. The elevator door flatness laser detection device comprises a side support which is provided with a transmission device, and further comprises a mounting frame which is arranged on the transmission device; the laser distance measuring sensor is installed in the middle area of the installation frame, and the two sets of marking mechanisms are arranged on the two sides of the laser distance measuring sensor respectively. The two marking mechanisms are arranged and located on the two sides of the laser distance measuring sensor respectively, the marking parts of the two marking mechanisms and the detection part of the laser distance measuring sensor are located on the same straight line, and through cooperation of the two marking mechanisms, in the back-and-forth detection process of the device, compared with a device with a single marking mechanism, the detection efficiency is greatly improved. The marking process is faster, and the marking result is more accurate.

This invention relates to the field of monitoring devices, and more particularly to a prefabricated intelligent monitoring device and method for the verticality of steel-concrete columns. The device includes a housing, a base mounted at the rear end of the housing, an assembly mechanism mounted on the back of the base, and a horizontal mechanism inside the housing. Through the assembly mechanism, when a verticality test is required, the housing and laser emitter are attached to the surface of the steel column via an electromagnetic plate inside a magnetic base. A battery then powers the electromagnetic plate, allowing it to be electromagnetically and securely mounted on the outside of the steel column. Two magnetic strips are also installed on both sides of the electromagnetic plate to increase magnetic attraction, enabling flexible mounting of the monitoring device for testing. This further enhances the installation stability of the monitoring equipment, improves the convenience of steel column testing, and, through laser detection, increases resistance to interference from the external environment.