1697 results about "Laser detection" patented technology

The invention belongs to the technical field of automatic detection, and discloses an online laser detection and grading regulation and control system for particle size distribution of crushed raw ore. The invention aims to solve the problems of halo effect interference caused by adhesion of fine dust in a complex industrial environment and insufficient detection precision of a traditional method. The system obtains dynamic scattering light field data through the laser scanning module, identifies a halo effect region and generates a compensation coefficient by using the light field preprocessing module, and realizes accurate reconstruction of particle boundaries in combination with the edge reconstruction module. The particle size distribution analysis module extracts multi-dimensional geometric features based on the accurate boundary data, and generates a real-time particle size distribution curve. The grading strategy generation module formulates a regulation and control strategy according to deviation characteristics of the curve and a preset standard, and the dynamic regulation and control module adjusts parameters of crushing equipment in real time and optimizes particle size distribution. The method effectively overcomes the halo effect interference, improves the detection precision and the system stability, breaks through the single limitation of a traditional method, and provides comprehensive data support for a downstream process.

The invention relates to the technical field of control and regulation systems, in particular to a photovoltaic module anomaly recognition method based on laser detection, which comprises the following steps: generating a clock signal synchronous with a laser scanning time sequence through a hardware synchronous trigger, and driving a temperature and humidity sensor, a salt mist sensor and an illumination intensity sensor to collect environmental parameters; and constructing a multi-source data set containing the salt crystallization trend and the environmental interference level. And based on a temperature and humidity segmented compensation reflectivity base line, a salt mist mode switching optimization dust retention judgment threshold value, and illumination correlation sensitivity adjustment hot spot detection parameters, dynamic model correction is realized. And a fault database is matched to trigger a grading alarm mechanism, and a decision tree classifier is combined to verify time continuity to generate a diagnosis report. A dynamic detection path is constructed through spiral path planning, a multi-machine contract network protocol and wind disturbance trajectory correction, data feedback is executed to form closed-loop control logic, and the problems of misjudgment and missing detection in high salt mist, temperature change and illumination fluctuation environments are effectively solved.

The invention relates to the field of landfill methane emission remote sensing monitoring, and discloses a landfill methane emission flux measuring and calculating method and device and a medium, and the method comprises the following steps: based on regional satellite TROPOMI observation data, carrying out qualitative analysis on annual average methane emission signals of a landfill, and determining a target landfill according to a qualitative analysis result; based on data of a satellite-borne hyperspectral imager, the methane emission flux of the target landfill is quantitatively measured and calculated, and the position of a methane emission hot spot area in the target landfill is determined; and positioning the position of an emission source in the target landfill through an active methane laser detection lens carried by an unmanned aerial vehicle platform, and independently calculating the methane emission flux of the target landfill by adopting an upper and lower section method. Based on the method, the annual average methane emission condition of the landfill can be rapidly and accurately evaluated, the methane emission flux of the whole landfill is obtained, and the internal emission hot spot area of the landfill is positioned.

The invention relates to the technical field of bridge engineering construction, in particular to a bridge deck concrete flatness detection and correction method, which comprises the following steps: synchronously acquiring bridge deck point cloud, elevation and crack data through a three-dimensional laser scanner, a laser profiler and an ultrasonic sensor, and fusing to generate a three-dimensional digital model; defects such as local protrusions and wave deformation are recognized based on an intelligent analysis algorithm, causes are analyzed, and correction process parameters such as milling, cladding, grouting or ultrathin layer pouring are generated in a targeted mode; operation is executed through equipment such as a finish milling machine, closed-loop control is realized by combining real-time monitoring of a laser profiler, and finally, a traceable digital file is formed through laser detection, inspection and acceptance of an unmanned aerial vehicle and data archiving. By means of the method, the pass percent of the flatness of the bridge floor can be increased to 94% or above, the maximum height difference is controlled within 3 mm, the maintenance period of the bridge is prolonged, and the maintenance cost is reduced.

The invention relates to the technical field of laser detection equipment, and discloses an edge contour laser detector with a rotary table, the edge contour laser detector comprises a lathe bed, a detection clamp, the rotary table and a laser detection head, the detection clamp is installed at the power output end of the rotary table, and a driving part of the rotary table is located in the lathe bed and is provided with a driving unit for driving the driving part to drive the detection clamp to rotate; the laser detection head and the rotary table are both connected to a control unit, and the control unit is configured to control the driving unit to drive the rotary table to rotate by a corresponding angle according to a set detection path and control the laser detection head to perform static or dynamic scanning on a to-be-detected part of a workpiece clamped by the detection clamp so as to measure edge contour data of the workpiece; and the workpiece edge contour data is sent to the data processing unit for processing to obtain a measurement error, and the measurement error is sent to the display terminal. According to the invention, the detection clamp is provided with the rotary table, and the laser measurement technology is integrated, so that the high-precision, high-efficiency and omnibearing measurement of the blade edge can be realized.

The invention relates to the technical field of quartz crucible tools, in particular to a quartz crucible outer contour dimension detection tool which comprises a base, a fixing mechanism and an adjusting mechanism, a laser detector is arranged on the base, a movable disc is movably arranged on the base, a fixing shaft is fixedly arranged on the movable disc, and the quartz crucible outer contour dimension detection tool further comprises the fixing mechanism and the adjusting mechanism. The quartz crucible is centered and fixed on the base through synchronous movement of the fixing mechanism, it is ensured that the crucible is kept at the center position in the detection process, deviation or rotation is reduced, and therefore the measurement error is reduced, the position of the abutting block is adjusted through the adjusting mechanism according to the size of the inner wall of the quartz crucible, and it is ensured that the detection tool can adapt to quartz crucibles of different specifications. When the size of the quartz crucible changes, the detection tool is ensured to be always in close contact with the inner wall of the quartz crucible, and effective fixing and supporting are realized.

The invention discloses a pressure vessel welding seam nondestructive rapid detection device, which comprises a displacement mechanism and a to-be-detected mechanism, the to-be-detected mechanism comprises supporting frames, a pressure vessel main body is placed at the upper top ends of the two supporting frames, and accessories are welded and formed at the two ends of the pressure vessel main body. The lifting frame rotates to drive the two sets of knocking mechanisms to move up and down, the reset spring is compressed in the process, the two sets of knocking mechanisms move in a staggered mode, the welding position inside the pressure container body and the accessory is impacted, and the welding position is detected through the laser detection head. When the pressure vessel is impacted, whether the pressure vessel is damaged or not after being impacted is checked, if the pressure vessel is damaged, the marking pen can achieve fine adjustment of arc-shaped movement with the help of the marking mechanism so as to make contact with the inner wall of the pressure vessel body, and due to rotation of equipment, marking treatment is conducted on the damaged position, and follow-up treatment is facilitated for workers.

The invention discloses an intelligent ground mobile high-precision gas leakage inspection and source tracking system, and relates to the technical field of gas pipe network leakage detection and leakage point positioning analysis. The system is mainly composed of a mobile inspection platform, a mid-infrared laser detection device, a three-dimensional anemograph, an inertial navigation module, a GIS system, a GNSS navigation positioning system, a wireless communication module and an intelligent detection comprehensive platform, and multi-source information fusion calculation, a dynamic adaptive analysis model and a maximum likelihood estimation method are combined. According to the intelligent gas leakage detection system, autonomous inspection can be achieved in a complex environment, abnormal gas component data can be processed in real time, detected gas space-time distribution information is transmitted to an intelligent comprehensive platform through a wireless communication module, data sharing and monitoring are completed, and efficient detection and accurate positioning of gas leakage are achieved. The method is suitable for gas leakage monitoring and component tracking in the fields of urban gas pipe networks, industrial parks and environmental protection, and the efficiency and precision of gas detection are remarkably improved.

The invention discloses a graphite negative electrode powder laser particle size detection device, relates to the field of particle size detection, and solves the problem that an existing particle size detection device is difficult to continuously detect multiple batches of graphite samples, the graphite negative electrode powder laser particle size detection device comprises a device shell and a control top plate arranged above the device shell, and a driving rod and a laser detection head are mounted at the bottom of the control top plate; stirring fan blades are installed at the bottom of the driving rod, a rotating disc is rotationally installed at the top of the device shell, and two symmetrically-distributed detection cylinders and two symmetrically-distributed cleaning cylinders are arranged at the top of the rotating disc; the lifting mechanism is used for lifting the driving rod upwards, and the lifting mechanism is mounted on the inner side of the device shell; through the lifting mechanism, in the rotating process of the rotating disc, the stirring fan blades and the driving rod are lifted upwards and reset downwards, so that the stirring fan blades and the driving rod enter the detection barrel and the cleaning barrel conveniently, particle size detection of a graphite sample and cleaning of the stirring fan blades are realized, and the effect of continuous detection is achieved.

The invention discloses a detection device and method for laser film production. Comprising a middle rotating shaft, upper and lower detection turntables, a middle assembly and a driving motor, the detection turntable is provided with a plurality of groups of laser detection heads, and outgoing lines of the laser detection heads are connected to a peripheral annular conductive track through a channel in the transfer shaft; an elastic shifting piece at a power leading end in a cavity of the middle assembly is in contact with the annular conductive track to realize rotary power transmission; the motor drives the middle rotating shaft to drive the detection turntable to rotate, so that the laser detection head scans the thickness of a film in a detection area between the turntables along a circumferential track; the detection rotating discs are connected through columnar discs, motor operation airflow is collected through internal annular air paths of the detection rotating discs, blowing airflow which is symmetrically divided and covers the film breadth is formed through peripheral airflow outlets, a detection area is synchronously cleaned, and static electricity is restrained. According to the invention, high-efficiency, high-precision and multi-channel online thickness measurement is realized, a self-cleaning function is integrated, and the problems of contradiction between efficiency and precision, high cleaning sensitivity and difficult production line expansion in the prior art are solved.

The invention discloses a vehicle-mounted laser gas pollution detection and prediction system, which comprises a mobile laser detection platform, a machine prediction system and a dynamic pollution map generation system, and is characterized in that the mobile laser detection platform is carried on a new energy vehicle and is integrated with a laser gas detector, a high-precision positioning module, an inertial navigation system and an environment sensor group; the machine prediction system receives real-time traffic flow data, weather forecast data and topographic data and outputs a pollution diffusion prediction result; the dynamic pollution map generation system comprises a space-time synchronization module, a data fusion module and a pollution event marking module. And the space-time synchronization module binds the gas pollution data with the positioning coordinates and the millisecond timestamp through hardware clock synchronization.

According to the mining dust monitoring system and method based on multi-wavelength fusion and dynamic compensation, a light chamber is arranged in an inner cavity of a shell, an inlet of the light chamber is connected with a main gas inlet of the shell through a gas inlet pipeline, and an outlet of the light chamber is connected with a main gas outlet of the shell through a gas exhaust pipeline; the laser detection module is mounted in the light chamber and comprises a lens group, a laser source I, a laser source II, a light scattering signal receiving module, a light transmission signal receiving module and a light trap; the first laser source and the second laser source form a dual-wavelength laser source; the micro fan is mounted in the main air outlet; the environment sensing module is mounted in the exhaust pipeline; the method comprises the following steps: constructing an environment drift prediction model; testing the dust concentration in the environment to be tested, and calculating the dust concentration I Csct and the dust concentration II Ct based on the scattered light electric signal and the transmission photoelectric signal; and carrying out environment drift prediction, and obtaining corrected dust concentration data through a fusion calculation mode. According to the system and the method, an accurate dust concentration monitoring result can be obtained.

The invention relates to the field of laser detection, and discloses a shaving board processing-based surface flatness detection device which comprises a base, a plurality of conveying rods are arranged at the side part of the base, a wood board is placed on the conveying rods, a detection box is fixedly mounted at the top end of the base, and a laser detector is fixedly mounted in the center of the top of the detection box. The laser detector is used for detecting the flatness of the surface of the wood board, a detection auxiliary device is fixedly installed on the side portion of the base located on the lower portion of the detection box, and a grinding device is arranged on the detection auxiliary device; the two rollers in the detection auxiliary device clamp a wood board, the detection plate is leveled to make contact with the side face of the wood board, a half gear is driven to rotate when the wood board inclines, the half gear is meshed with teeth, the position of a lifting block is adjusted, and even if the edge of the wood board protrudes, the edge of the wood board does not protrude. The lifting block can still be adjusted to enable the board to be in a horizontal position, so that the detection precision of the laser detector is improved, and the influence of board inclination on the detection of the laser detector is reduced.

The invention relates to the technical field of laser image detection, and particularly discloses a belt tearing laser scanning detection device and a belt longitudinal tearing laser detection method. The belt tearing laser scanning detection device comprises an ellipsoidal carrier roller, laser equipment and visual equipment, the outer surface of the ellipsoidal carrier roller is an arc-shaped surface, a belt is tensioned and wound around the arc-shaped surface, and the laser equipment is fixedly arranged in the mode that laser faces the ellipsoidal carrier roller and can irradiate the belt. The visual equipment is fixedly arranged in the mode that the visual field faces the ellipsoid carrier roller and the belt is in the visual field, the structural arrangement can reconstruct the carrying working state of the belt, the tearing characteristic of the belt in the carrying state is highlighted, and the belt longitudinal tearing laser detection method is more suitable for long-distance conveying belt longitudinal tearing detection; and the method has higher detection accuracy.

The invention discloses an automobile part assembly precision intelligent compensation method and a self-adaptive regulation and control system, and relates to the field of intelligent compensation, and the method comprises the steps: synchronously collecting part geometric parameters, tool poses and environment data, and constructing an associated data matrix; analyzing data by using an improved random forest-attention model, and outputting a deviation factor contribution degree sequence; a compensation calculation model is designed accordingly, initial compensation amounts are generated in a segmented mode in combination with a precision margin threshold value, and correction is conducted through historical data similarity matching; selecting an execution path according to the compensation amount and the core deviation type; an actual precision value is obtained through laser detection after assembly, and a compensation error is calculated; based on an error triggering model optimization mechanism, model parameters are iteratively updated by using a gradient descent algorithm, and the deviation identification and compensation precision is improved. The method has the advantages that the model attribution deviation is improved, the precise compensation amount is calculated in combination with historical data, flexible execution, real-time monitoring and model self-optimization are matched, and the assembly precision and the production efficiency are efficiently improved.

The utility model discloses a shaving board surface flatness detection device, and relates to the technical field of shaving board processing. By arranging the supporting plate, the cleaning roller, the dust suction box, the connecting pipe, the draught fan, the dust collection box and the filter plate, the function of cleaning the surface of the plate is achieved, the cleaning roller rotates to clean the surface of the plate, the situation that chippings and impurities exist on the surface of the plate, and the detection result of the laser detector is affected is prevented, and under the action of the draught fan, the detection efficiency is improved. The swept chippings and impurities are collected in a dust collection box; by arranging a bidirectional lead screw, a supporting rod, a fixing plate, a first connecting plate, a mounting plate, a second connecting plate and rollers, the function of limiting the moving position of a plate is achieved, the bidirectional lead screw rotates to drive the first connecting plate at the two ends to move, and the first connecting plate drives the mounting plate to move; and until the roller on the right side of the mounting plate makes contact with the two sides of the plate, the moving position of the plate is limited.

The invention relates to the technical field of laser detection, in particular to laser detection equipment for pavement material thickness detection, which comprises a detection table, an arc-shaped hole is formed in one side of the top end of the detection table in a penetrating manner, a stop block is fixedly connected to the outer side, corresponding to the arc-shaped hole, of the top end of the detection table, and an arc-shaped road edge stone is arranged above the top end, corresponding to the arc-shaped hole, of the detection table. A positioning adjusting mechanism is arranged at the bottom end of the detection table, and a scraping cleaning mechanism and a detection mechanism are arranged at the top end of the detection table; the positioning adjusting mechanism comprises a first clamping plate and a second clamping plate which are arranged on the two sides of the inner wall of the arc-shaped hole, and the first clamping plate, the second clamping plate and the check block are matched to be used for positioning and adjusting the position of the arc-shaped road edge stone. Under the cooperation of the deflected first clamping plate, the deflected second clamping plate and the fixed stop block, the position of the arc-shaped road edge stone can be quickly adjusted, so that the adjustment time can be shortened, and the adjustment efficiency is improved.

The invention discloses a municipal bridge expansion joint detection mechanism, and belongs to the technical field of expansion joint laser detection.The municipal bridge expansion joint detection mechanism comprises a main case and heat dissipation holes formed in the corners of the main case, guide columns are fixed to the side edges of the main case, and side width check blocks are arranged on the sides of the guide columns; a reference rod fixed to the side width check block is inserted into a guide column, a laser range finder is installed in the guide column, the laser range finder detects movement of the end of the reference rod through optics, and the middle of the side width check block is connected with a movable wheel through a rotating shaft. A first cleaning assembly and a second cleaning assembly are installed on the front side and the rear side of the movable wheel correspondingly. According to the municipal bridge expansion joint detection mechanism, through the arrangement of the laser range finder, the width of an expansion joint can be accurately measured conveniently, meanwhile, fixed-point or whole-line width measurement can be conveniently conducted on the expansion joint, and silt attached to the side wall of the expansion joint can be conveniently cleaned in the measurement process.

The invention relates to the technical field of measuring devices, and particularly discloses a double-layer composite air pipe sealing size laser high-precision detection device which comprises a base and an air pipe, sealing plates are fixedly connected to the positions, close to a port, of the outer surface of the air pipe, a bolt is arranged between the two sealing plates, and a guide seat is movably connected to the upper side of the base. A positioning assembly is arranged on the upper side of the guide base and comprises a sleeve fixedly connected with the outer surface of the upper end of the guide base. By arranging the positioning assembly, the air pipes can be lifted and supported on the two sides of the connecting position of the air pipes through the symmetrically-distributed jacking blocks, the probability that the air pipes deform downwards in the placing process can be effectively reduced, therefore, the two sets of air pipes are kept in a straight line shape, and then the risk that a gap between the sealing plates changes can be reduced; the detection error of the sealing performance of the air pipe joint caused by the external force can be reduced, and the detection precision can be effectively improved.

The invention discloses an optical element measurement centering tool for a ship clutch shaft, and relates to the technical field of centering measurement tools, the optical element measurement centering tool comprises a fixing part, a shaft fixing assembly and a laser detection assembly, a mounting groove is formed in the surface of the fixing part, and under the cooperation of the laser detection assembly, a Helmholtz coil generates a uniform magnetic field to drive a magnetic needle to be oriented; the perpendicularity error of the reflective mirror and the axis of the magnetic needle is small, a dynamic vertical reference is provided for a laser beam, the problem of reference drift caused by ship vibration and shaft system inclination is solved, the laser beam is converted into parallel light through the collimating lens, the optical axis overlap ratio error is low, and then through cooperation of the pneumatic hinge and the vertical lead screw guide rail, the laser beam can be accurately measured. Initial alignment of the laser beams is completed in a very short time, fine trimming of light spots is achieved, efficiency is effectively improved compared with manual adjustment, the reflection angles of the reflectors are synchronously adjusted, it is ensured that the laser beams are perpendicular to the surface of the shaft all the time, physical contact errors of traditional contact type measurement are avoided, and measurement accuracy is improved.

The invention discloses an indoor toxic and harmful gas three-dimensional imaging and tracing method and equipment, and the method comprises the steps: placing remote measurement instruments based on a laser detection principle at different corners in a room, obtaining the remote measurement data of each space layer at different scanning angles, and positioning a gas concentration high-value region; dense point locations are arranged in a gas concentration high-value area of each spatial layer, an in-situ measurement instrument based on a spectrum detection principle is utilized to measure and obtain in-situ data on the point locations, and meanwhile, extremely-high-resolution poisonous and harmful gas accurate traceability is realized; the two-dimensional distribution of the gas concentration of each space layer is obtained through remote measurement and in-situ data reconstruction, and is further mapped to a three-dimensional space to realize three-dimensional imaging and gas traceability. A wide-area light beam scattering gas telemetering instrument and a multi-pass reflection ultra-sensitive gas in-situ measuring instrument are autonomously designed, so that full-space rapid three-dimensional imaging and accurate traceability can be realized, system errors are reduced, an extremely low detection limit is achieved, and the feasibility, accuracy and high efficiency of the method are ensured.

The invention relates to the technical field of laser detection, and discloses a laser measuring device for steel structure curvature detection, which comprises a detection frame for loading a steel pipe body, two sides of the detection frame are respectively provided with a hydraulic rod, and the output end of each hydraulic rod is fixedly provided with a conical limiting block. By starting the electric push rod body, the two piston bodies fixed to the output end of the electric push rod body slide, under the mutual cooperation of the dustproof transmission assembly and the washing dust-sticking assembly, when laser detection is finished, the dust-proof transmission assembly and the washing dust-sticking assembly can carry out dust-proof detection on the steel pipe body, so that the detection efficiency is improved, and the detection precision is improved. The roller can be wrapped for dust prevention, the problem that laser ranging deviates due to aging corrosion caused by the fact that the roller is located in the external environment for a long time is solved, the dust-sticking air bag roller can automatically contract at the moment, and due to the fact that the dust-sticking air bag roller is coated with washing glue, the dust-sticking air bag roller can be directly washed, and follow-up use is facilitated.

The invention belongs to the technical field of laser detection, and particularly relates to touch screen flatness detection equipment which comprises a base and an L-shaped supporting frame fixedly arranged at the top of the base, and further comprises a moving mechanism arranged at the top of the L-shaped supporting frame, a first air cylinder is arranged at the bottom of the moving mechanism, and a laser detector is fixedly arranged at the moving end of the first air cylinder; and the annular positioning seat is fixedly arranged at the top of the base, and an annular auxiliary touch screen is detachably arranged at the top of the annular positioning seat. The to-be-detected touch screen is ensured to be horizontally placed through the annular positioning seat, and the annular auxiliary touch screen makes up the defect of an edge structure so as to avoid abnormity of a laser detection signal; the lifting mechanism is matched with the dust removal mechanism to clean dust on the surface and accurately control the height, the alignment degree detection mechanism and the lifting mechanism cooperatively adjust the alignment degree of the touch screen to be detected and the annular auxiliary touch screen, the problems that edge detection data of the touch screen is missing and accuracy is insufficient are effectively solved, and the accuracy and stability of flatness detection are improved.

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 provides a degassing-free transformer oil monitoring device and method. A transparent accommodating pipe is used for being communicated with an external transformer oil supply device; the laser detection assembly is arranged on one side of the transparent accommodating tube; the voltage regulation and control unit is connected with the transparent accommodating tube; the imaging assembly is arranged on one side of the transparent accommodating tube and is used for acquiring optical image data of the Tyndall phenomenon in the transformer oil sample under different voltage conditions; the data processing unit is used for setting a segmentation point in the middle position of a Tyndall light pillar based on the Tyndall light pillar in the image data collected by the imaging assembly, determining a standard deviation according to the ratio of the total number of gray pixels on the left side and the right side of the Tyndall light pillar, and determining a threshold value of the Tyndall light pillar according to the relation between the standard deviation and a preset threshold value range. And judging the existence state and distribution characteristics of the gas in the transformer oil sample. Degassing treatment is not needed, the process is simplified, sample pollution is avoided, and the monitoring accuracy and stability of the gas in the transformer oil are remarkably improved.

The invention discloses a centerless grinding machine based on laser on-line measurement and automatic compensation functions, and relates to the technical field of machine tool machining equipment. Rectangular protection covers are symmetrically arranged above a movement cavity; the driving assembly is arranged in a movement cavity formed in the base, one end of the driving assembly is connected with the inner wall of the movement cavity, and the other end of the driving assembly is in intermittent fit with the rectangular protection cover; the grinding wheel is slidably arranged in the rectangular protection cover on one side; the guide wheel is slidably arranged in the rectangular protection cover on the other side, the center line of the grinding wheel is parallel to the center line of the guide wheel, a workpiece supporting plate is arranged between the grinding wheel and the guide wheel, and the adjusting assemblies are arranged on the sides, away from the driving assembly, of the grinding wheel and the guide wheel correspondingly. The workpiece is ground into the preset size, the diameter of the ground workpiece is detected through the laser detector, and if the diameter does not meet the standard, the distance between the grinding wheel and the guide wheel is finely adjusted through the adjusting assembly.

The invention discloses a bearing outer ring profile tolerance laser detection device, and belongs to the technical field of laser detection, the bearing outer ring profile tolerance laser detection device comprises a bottom plate and a second motor installed on the bottom plate, the output end of the second motor is provided with a rotating seat, the rotating seat is provided with a dismounting assembly, the dismounting assembly is provided with a positioning frame, and the positioning frame is provided with a suction cup. A lifting assembly is installed on the bottom plate, a top plate is installed on the lifting assembly, a third connecting plate is installed on the lifting assembly, a connecting disc is rotatably installed on the top plate, a rotating ring is installed on the connecting disc, a cleaning brush is installed on the rotating ring, a detection assembly is rotatably installed on the third connecting plate, and a transmission assembly is installed on the third connecting plate. According to the bearing detection device, the positioning frame and the suction cup are arranged to cooperate with each other, the positioning frame and the suction cup adsorb the inner wall of the bearing, then the bearing can be positioned, and the bearing is not prone to deviation during detection.

The invention discloses a non-contact drunk driving detection method and system adopting a large-linewidth tunable laser, and relates to the technical field of laser detection, and the method comprises the steps: collecting transmission light signals and corresponding electric signals under different linewidth conditions through experiments, synchronously recording experiment parameters, obtaining an original data set, carrying out the preprocessing of the original data set, and carrying out the detection of drunk driving. Generating a training set, a verification set and a test set, and training a BP (Back Propagation) neural network to obtain a pre-trained noise suppression model; the method comprises the following steps of: generating a wavelength-tunable modulated laser beam by adopting a large-linewidth tunable laser, directionally projecting the modulated laser beam into a vehicle cab, and enabling laser to penetrate through the cab space and carry alcohol gas concentration information to obtain a transmission light signal; focusing the transmission light signal to a photoelectric detector through an optical convergence device to obtain a noisy electric signal, inputting the noisy electric signal into a pre-trained noise suppression model, and outputting a de-noised electric signal; performing synchronous demodulation and harmonic analysis on the de-noised electric signal by using a phase-locked amplification detection technology, extracting a second harmonic signal amplitude associated with the modulation frequency, and determining a second harmonic signal characteristic amplitude through peak detection; according to the calibration relation between the second harmonic signal characteristic amplitude and the alcohol gas concentration, the concentration value of the alcohol gas in the cab is calculated in an inversion mode through a least square fitting algorithm, an alcohol concentration threshold value is set, the drunk driving condition of a driver is judged, a detection result is generated, and an alarm signal is output.

The invention discloses a printing machine accessory laser detection device, and relates to the technical field of printing machine accessory production, the printing machine accessory laser detection device comprises a tool substrate and a laser detection assembly, the laser detection assembly is arranged below the tool substrate, and the laser detection assembly comprises an air cylinder fixed to the back end of the tool substrate through a bolt; a connecting plate is fixedly connected to the telescopic end of the air cylinder, a lifting rod is fixedly connected to the bottom of the tail end of the connecting plate, gear rings are fixed to the middle of the lifting rod in the radial direction at equal intervals, and a prism is fixedly installed at the tail end of the lifting rod. According to the non-contact measurement scheme based on the laser displacement sensor, the laser displacement sensor is responsible for measuring the position of the inner wall of the roller, the prism is used for changing the direction of the laser, the upper computer software is responsible for data processing and display, and compared with a traditional laser coaxial displacement meter, the laser displacement sensor is lower in cost and more accurate in measurement. Physical contact with the inner wall of the roller is not needed in the whole measurement process, and contact damage is avoided.

The invention relates to the field of laser detection, in particular to a sample mechanism for marine corrosion primary process detection, which comprises a sample box, a sample loading device for placing a sample plate is arranged in the sample box, and one side of the sample box is provided with an excitation interface and a detection interface. The upper portion of the communication port is connected with a three-way connector, the other two connectors of the three-way connector are used for air exhaust and water dripping respectively, the connector for air exhaust is connected with a vacuumizing pump, and the connector for water dripping is matched with a plugging cover. And the water dripping joint is connected with a water dripping pipe matched with a sample plate on the sample loading device. The communicating port is matched with the three-way joint, so that the vacuumizing operation can be completed through the communicating port, and meanwhile, the dripping operation can also be completed, so that the sample plate simulates a sample environment in which seawater is immersed, and a more accurate detection effect can be obtained.