121 results about "Laser target" patented technology

The invention discloses a deviation rectification control method and system for simulating shield excavation, and relates to the technical field of shield control. The deviation rectification control method and system for simulating shield excavation comprise the steps that S1, shield deviation rectification data are collected in real time, and the shield deviation rectification data are preprocessed; s2, extracting an attitude deviation component, comprehensively evaluating environmental drift and optical distortion influence of attitude deviation, and generating each calibrated attitude angle; s3, all the calibrated attitude angles are read, attitude correction required values in all directions are calculated in combination with the laser target deviation value, the dynamic fluctuation degree of the execution process is quantified, and the target stroke of the deviation correction oil cylinder is obtained; and S4, the target speed is calculated, a deviation rectification control instruction is generated and issued for execution, a deviation rectification execution data set is formed, and a deviation rectification control closed loop is completed. The problems that an existing system lacks an automatic calibration and anomaly recognition mechanism, sensing data distortion still participates in deviation correction control, PLC attitude calculation errors are accumulated, and false deviation correction is generated are solved.

The invention belongs to the field of laser processing and numerical simulation, and particularly relates to a finite element modeling and analysis method for a nanosecond pulse laser target material. The method comprises the following steps: establishing and loading a laser heat source model; establishing a target material finite element model and carrying out grid division; establishing and solving a transient heat conduction equation; carrying out multi-cycle iterative solution and post-processing; and performing model verification and parameter analysis. According to the method, the laser heat source model is established, the adaptive grid encryption strategy for temperature gradient optimization is adopted, and the transient solution algorithm is combined, so that compared with a traditional simplified analysis model or general commercial software simulation, the prediction precision of the target material temperature field spatio-temporal evolution law under the nanosecond pulse laser effect is remarkably improved. The method can accurately predict the temperature distribution and evolution law of the target material under the action of laser, has the advantages of high modeling precision, good calculation efficiency, wide application range and the like, and is suitable for engineering applications such as laser processing and damage evaluation of optical materials and composite materials.

The invention provides a directional ultra-short strong field electromagnetic pulse generation device, a plasma channel is formed through laser targeting gas and ultra-short strong field electromagnetic pulses are generated, the device comprises a high-power laser, a laser focusing module, a gas target module and a vacuum cavity, the high-power laser is used for generating femtosecond laser pulses and emitting the femtosecond laser pulses into the vacuum cavity; the laser focusing module is arranged in the vacuum cavity and is used for focusing femtosecond laser pulses generated by the high-power laser onto the gas target; the gas target module is arranged in the vacuum cavity and used for generating a high-density gas target and spraying the high-density gas target upwards, and a gas spraying opening of a gas target nozzle is located below the laser focus and can be adjusted in an electric control mode. According to the invention, escape electrons with charge quantity larger than that of a solid target and a low-density gas target can be generated, and laser forms arc discharge similar to thunder and lightning cloud in near-critical density plasma to generate EMP, so that electromagnetic radiation which is stronger than that of the solid target and far better than that of a common gas target can be generated.

A laser target localization method and an implementation apparatus therefor, and a tunnel deformation monitoring method. The laser target localization method comprises: providing in a spaced manner a laser ranging module (31) and a target on an object to be subjected to detection (S1); the laser ranging module (31) projecting an emergent laser onto the target (S2); establishing a sampling point coordinate system by using a projection point of the emergent laser as the coordinate origin (S3); making the projection point of the emergent laser move in a spiral line around the coordinate origin in the sampling point coordinate system, and collecting real-time coordinate values of all sampling points (100) in the sampling point coordinate system, and real-time intensity values of reflected light of the emergent laser at the positions of all the sampling points (100) (S4); and after the spiral-line movement ends, determining the region of the target on the basis of the real-time intensity values of the reflected light at the positions of all the sampling points (100), and on the basis of the coordinate values of all the sampling points (100) in the region of the target, determining the central point of the target (S5).

The invention discloses an immersed tube butt joint installation method and system based on laser ranging and visual recognition, and belongs to the technical field of ocean engineering. The method comprises the steps that a laser target set is installed on the butt joint end face of an installed pipe joint, and a laser positioning set and a laser projector are installed on the butt joint end face of a to-be-installed pipe joint; after the to-be-installed pipe joint sinks, the laser positioning group is started to measure the distance to the target group in real time, meanwhile, parallel light beams are emitted to the other end face of the to-be-installed pipe joint through the laser projector, and the position of a light spot is collected through visual recognition to obtain posture deviation; the distance and deviation data are fused, the optimal pose of the pipe joint to be installed is calculated through an optimization algorithm, and then the offset of the end face center and the axis deflection angle are obtained; and according to the parameters, a regulation and control instruction is generated, and the ballast water system and the winch system are controlled to adjust the posture of the to-be-installed pipe joint till accurate butt joint is achieved. According to the invention, full-underwater, high-precision and automatic immersed tube butt joint is realized, and the dependence on an overwater measuring tower and a GPS (Global Positioning System) is eliminated.

The invention relates to the technical field of laser measurement and photoelectric detection, and discloses a laser boresight equipment high-precision calibration method and system based on region segmentation mapping, and the method comprises the steps: firstly collecting a standard grid frosted glass target plate image, extracting grid intersection point pixel coordinates through employing an SURF algorithm, and building a data set corresponding to physical coordinates; dividing the field of view into a plurality of sub-regions, and respectively resolving a perspective transformation matrix mapped from a pixel coordinate system to a physical coordinate system; secondly, collecting a light spot image, performing initial positioning by using a Canny operator and a least square method, fitting a sampling sequence through a Sigmoid function, and extracting edge sub-pixel coordinates in combination with a central difference method; and finally, calling a corresponding transformation matrix according to the sub-region where the light spot is located to obtain physical coordinates, and calculating the light spot jerk value, the maximum diameter and the included angle between the optical axis and the mechanical axis. According to the invention, image distortion is compensated through view field partition mapping, and the calibration precision and detection efficiency of the laser boresight equipment are improved in combination with a sub-pixel positioning technology.

The method and device for mapping the local irradiation flux of laser target shooting based on phase plate positioning belong to the field of laser target shooting experiments. The present invention aims to solve the problem that the flux data in the existing optical element damage test analysis only uses the average flux as the result, and cannot achieve the correspondence between the target surface beam flux and the damage point. The present invention includes a calibration step for obtaining an affine transformation matrix and a step for performing a laser target shooting experiment to obtain the local irradiation flux of the target material. A phase plate is inserted between the lens and the target material in the target shooting experiment optical path, an array of damage points is formed on the rear surface of the target material, and an affine transformation matrix is ​​constructed. The phase plate is removed and the laser target shooting experiment is performed using the original experimental optical path; the near-field image of the target shooting laser beam is mapped to the target material damage image according to the affine transformation matrix, and the near-field image of the target shooting laser beam and the target material damage image are superimposed to obtain the position of the phase mark point corresponding to the target material damage point; and then the local irradiation flux of the laser target shooting at the location of each damage point on the target material is obtained.

The invention discloses a shield tunneling machine attitude deviation measurement method based on laser-vision deep learning heterogeneous fusion, and the method comprises the steps: employing double sensors of a laser target and a vision camera, carrying out the deployment of the sensors, and collecting data, which comprises laser data and vision data; preprocessing the data, wherein the preprocessing comprises laser data preprocessing and visual data preprocessing; the laser data preprocessing comprises laser data coordinate conversion, laser target attitude deviation calculation and noise filtering; the visual data preprocessing comprises image preprocessing, mark point detection, camera calibration and world coordinate calculation, and visual measurement attitude deviation calculation; a deep learning heterogeneous fusion model is constructed, the deep learning heterogeneous fusion model comprises a laser absolute feature branch, a visual spatial-temporal feature branch, an attention fusion layer and an output layer, and the model is trained; and inputting the preprocessed real-time data into the trained deep learning heterogeneous fusion model, and carrying out dynamic calibration on an output result.

The utility model discloses a laser axis determination instrument structure, which belongs to the technical field of laser boresighting, is used for receiving laser beams emitted by a laser boresighting mirror, and comprises a laser receiving assembly, a top shooting assembly and a tail shooting assembly, two vertical plates are symmetrically mounted on two sides of the bottom plate, and a spectroscope is fixed in a space formed by the base and the vertical plates; the spectroscope divides a laser beam emitted by the laser borescope into two light beams which are perpendicular to each other, and the two light beams are transmitted to the top shooting assembly and the tail shooting assembly respectively. Compared with the prior art, the device comprises the two groups of shooting assemblies which are perpendicular to each other, and can obtain a light spot image with a clear outline and a proper size by using optical glass and a CCD camera group, so that the deviation distance and the deviation angle can be conveniently calculated in the later period. In addition, the structure adopts a modular and combined design, and the joints are connected by flanges or threads, so that components with different specifications can be flexibly replaced, and later maintenance is also facilitated.

The utility model belongs to the technical field of optical imaging equipment, and relates to a portable laser target simulator which comprises an installation shell, a laser target simulator body and a Picatinny guide rail, movable openings are symmetrically formed in the bottom of the installation shell, a rectangular plate is connected between the inner walls of the two sides of the two movable openings in a sliding mode, and the top of the rectangular plate extends into the installation shell. The bottom of the rectangular plate extends to the position below the mounting shell and is fixedly connected with clamping plates, the clamping plates are arranged in an L shape, and the picatinny guide rail is located between the two clamping plates. Through mutual cooperation of the mounting shell, the rectangular plate, the movable opening, the clamping plates, the multi-direction screw and the like, the multi-direction screw can be rotated, so that the two clamping plates clamp an imitation gun, and the imitation gun can be clamped through the picatinny guide rail; the purpose that the mounting shell and the laser target simulator body are mounted on the simulation gun is achieved, the laser target simulator body can be conveniently mounted and dismounted through clamping, and the problem that the laser target simulator and the simulation gun are integrated and inconvenient to carry can be effectively solved.

The invention provides a modal test method and device, a readable storage medium and a modal test component. The modal testing method is applied to a modal testing assembly, the modal testing assembly comprises a laser target and a laser tracking device, the laser target is arranged on a to-be-tested object, the laser tracking device and the laser target are correspondingly arranged, and the modal testing method comprises the steps that under the condition that the to-be-tested object is subjected to impact excitation, a force signal of impact excitation is obtained; performing laser tracking on the laser target through a laser tracking device, and determining a first displacement signal of the laser target; and determining a modal test result of the to-be-tested object according to the force signal and the first displacement signal. According to the embodiment of the invention, the detection efficiency and accuracy of modal testing are improved.

The embodiment of the utility model provides a wide-area laser tracking target spot device. The wide-area laser tracking target spot device comprises a mounting seat and a plurality of target spot bases, the target spot base is of a semi-cylindrical structure, and a reflector is arranged on the rectangular plane of the target spot base and used for reflecting detection laser; the semicircular planes of the target spot bases are spliced with each other, and the rectangular planes of the two adjacent target spot bases are staggered with each other, so that the reflectors can reflect the detection laser at multiple angles; and one side of the mounting seat is connected to the semicircular plane of the target spot base at one end, and the other side of the mounting seat is mounted on the flexible measuring bracket so as to fix the mounting seat and the target spot base. According to the design, through a laser scanning principle and target point global tracking, a traditional target point which can only be detected in a single direction is creatively changed into a target point which can be detected in a full circumferential direction. Besides, the target spot can be detected in the whole circumferential direction, and no matter how the scanner moves, enough effective target points always exist in the space, so that loss and layering of measurement data are avoided, and the result precision is ensured.

The invention relates to a positioning device (3) for positioning metal profiles (2) to be attached to a support structure (1) for drywall construction, comprising a base body (4) with an end plate (5) having an end surface (6) designed to establish a magnetic connection to the metal profile (2), wherein a first scale (9, 10, 11 / 11', 12) is arranged on a broad side surface (8) of a broad side plate (7) of the base body (4) arranged perpendicular to the end plate (5). According to the invention, at least one narrow plate (13, 13') is provided, arranged perpendicular to the broad side plate (7) and perpendicular to the end plate (5), each with at least one broad side surface (14) having a second scale (15).

The invention relates to a positioning device (3) for positioning metal profiles (2) to be fastened to a support structure (1) for drywall construction, comprising a main body (4) with an end plate (5), which has an end face (6), which is designed to produce a magnetic connection to the metal profile (2), wherein a first scale (9, 10, 11 / 11', 12) is arranged on a broad-side face (8) of a broad-side plate (7) of the main body (4), which broad-side plate is arranged at a right angle to the end plate (5). According to the invention, at least one narrow plate (13, 13') is provided which is arranged perpendicular to the broad-side plate (7) and perpendicular to the end plate (5) and has a respective at least one broad-side surface (14) having a second scale (15).

The application discloses a kind of laser semi-active seeker testing system and method, system includes: optical platform, laser target simulation unit, seeker fixed seat, three-axis turntable and stepper motor etc.Modular.The laser target simulation unit is used to simulate the real echo signal generated after laser irradiation to target;The seeker fixed seat is installed on three-axis turntable, three-axis turntable is installed on optical platform and is driven by stepper motor.Laser target simulation unit, laser semi-active seeker and stepper motor are respectively connected with host computer communication.The application is applicable to miniature laser semi-active seeker, and can test the working distance, field angle, responsivity and multiple performance parameters of miniature laser semi-active seeker synchronously.

This utility model discloses a laser target thickness measuring instrument, including a main unit. An industrial control computer is located on one side of the main unit, and a target positioning and adjustment bracket and a target blank are located on the top side of the main unit. A gantry-type movable bracket is longitudinally movable on the top of the main unit, and a measuring device is driven by the gantry-type movable bracket. The measuring device includes a laser displacement rangefinder, a laser rangefinder transmitter, a laser rangefinder receiver, and a laser beam emitting device. The advantages of this utility model compared to existing technologies are: this device can measure the overall target thickness using laser. By setting a range through software, areas exceeding the set value are marked with laser marking, which clearly identifies the location of target distortion and deformation, saving manpower, improving work efficiency, and reducing scrap rate.

An extreme ultraviolet light generation apparatus includes a chamber in which a target substance supplied to a plasma generation region is irradiated with laser light to generate extreme ultraviolet light, a laser device generating the laser light, a target supply unit supplying a droplet of the target substance toward the plasma generation region, a target collection unit collecting the target substance which has not been irradiated with the laser light, a first gas supply unit supplying a buffer gas into the chamber, and a processor controlling the first gas supply unit so that, in a period of the droplet being output, a first flow rate of the buffer gas to be supplied from the first gas supply unit in at least a part of a first period is smaller than a second flow rate of the buffer gas to be supplied from the first gas supply unit in a second period.

An air-based counter-countermeasure (CCM) system includes an autonomous or semi-autonomous unmanned aircraft capable of deployment to an area of a countermeasure system having (1) a laser detector to receive and identify an incident laser signal as a target designator signal and (2) one or more countermeasure subsystems operative in response to an output of the laser detector to deploy corresponding countermeasures against a laser target designator. The CCM system further includes a laser-based CCM subsystem carried by the aircraft, the CCM subsystem being configured and operative, during the deployment of the aircraft, to direct a simulated target designator laser signal to the laser detector of the countermeasure system to trigger one or more of the countermeasures and thereby reduce protective ability of the countermeasure system against subsequent laser-guided attack.

The utility model relates to the technical field of track detection equipment, in particular to a visual detection device for a crane track. The detection device comprises a light beam emitting device and a light beam receiving device, the light beam emitting device comprises a first chassis, a first shell is installed on the first chassis, a first main control circuit board and a laser pen are arranged in the first shell, and a first track clamping assembly is arranged on the first chassis; the light beam receiving device comprises a second chassis, a second shell is installed on the second chassis, a second main control circuit board, a camera and a walking assembly are arranged in the second shell, a laser target is arranged at one end of the second shell, the camera faces the laser target and is coaxial with the laser target, and a second track clamping assembly is arranged on the second chassis. The device is divided into the reference light source and the detection vehicle, the distance between the side wheels on the two sides is adjusted through the track width adjusting mechanism on the device, the wheels on the two sides of the device are clamped and matched with tracks with different widths, and therefore the application range of the device is enlarged.

This invention discloses a high-precision local mapping measurement system and method for surface damage density of optical components, aiming to solve the problem of non-uniform distribution of the laser spot affecting the measurement accuracy in existing technologies. This application establishes a coordinate mapping transformation relationship between the laser target irradiation spot and the optical component, realizing the spatial mapping between the optical component damage points and the local laser target spot. It then calculates and records the local flux, the number of damage points, and the number of pixels contained in each local region, and calculates the damage density for each flux interval. Innovatively, this application replaces the "average flux of the entire laser spot" in the prior art with the "local flux of the optical component damage points," achieving spatial mapping between the optical component damage points and the local laser target spot, effectively mitigating the impact of non-uniform laser spot distribution on the measurement accuracy of surface damage density.

The utility model relates to the technical field of target shooting vehicles, in particular to a laser target shooting unmanned target vehicle which comprises a vehicle body, the vehicle body is a hollow rectangular cavity, a vehicle roof is arranged on the vehicle body, a supporting pipe is arranged on the vehicle roof, and a laser target plate is arranged on the supporting pipe. A moving track and a shaking plate are arranged on the outer walls of the two parallel sides of the vehicle body, the shaking plate is rotationally connected with the vehicle body, a boosting track is arranged on the shaking plate, the outline of the moving track is in a rounded rectangle shape, the outline of the boosting track is in a rounded triangle shape, and the shaking plate rotates to drive the vehicle body to shake up and down. Obstacle sensing assemblies are arranged on the outer walls of the other two sides of the vehicle body. The target vehicle is moved through cooperation of the moving track and the boosting track, and the shaking plate rotates and rolls to drive the vehicle body to shake in the moving process, so that the laser target plate shakes, and indoor simulation of a target vehicle cross-country scene is carried out.

The application discloses a kind of multi-channel wide spectrum scattered light energy simultaneous measurement device and method, wherein multi-channel wide spectrum scattered light energy simultaneous measurement device mainly includes target chamber, spectrometer, gate camera and multiple scattered light imaging light paths.The present multi-channel wide spectrum scattered light energy simultaneous measurement device and method are used, by setting multiple scattered light imaging light paths, realize multi-channel measurement capability, can accurately give the energy of different wavelengths and total energy, realize the simultaneous measurement of stimulated brillouin scattering and stimulated raman scattering scattered light, provide more reliable diagnostic techniques for the scattered light generated by laser target shooting;At the same time, the present measurement method greatly reduces the use of energy probe, not only saves cost, but also improves diagnostic efficiency;And, the present measurement method can be used not only for high-energy scattered light measurement, but also for other light source intensity analysis and comparison.

The invention relates to the technical field of laser frequency locking, and provides a method and system for laser frequency locking, the system comprises an MCU, a high voltage amplification module, a PZT cavity length adjusting module, a laser and a PD monitoring module, the MCU is used for outputting a triangular wave scanning signal, and collecting an error signal and a transmission spectrum signal through two ADC channels; the high-voltage amplification module is used for receiving the triangular wave scanning signal and outputting a high-voltage signal; the PZT cavity length adjusting module is used for receiving the high-voltage signal and changing the cavity length; the laser is used for generating a transmission spectrum signal and an error signal according to cavity length change; the PD monitoring module is used for collecting a transmission spectrum signal and an error signal generated by the laser and outputting the signals to the MCU. According to the invention, the automation degree and stability of frequency locking control of the laser are improved, and high-efficiency target band output of the laser is realized.

The invention discloses a laser shooting target detection device and method, and relates to the technical field of laser target quality detection.The laser shooting target detection device comprises a profile steel rack, an inverted-T-shaped table is fixed to the right side of the bottom of the profile steel rack, and a transverse table is integrally formed on the outer wall of one side of the inverted-T-shaped table; an inner overturning releasing assembly is installed on the outer wall of the other side of the inverted-T-shaped table, and an opposite target clamping device used for clamping a laser target piece is installed at the driving end of the inner overturning releasing assembly. Full-process closed-loop control of laser target piece dumping, resetting after dumping and laser design function verification is achieved through mechanical automation, the automation level and experiment efficiency of detection are remarkably improved, errors and labor intensity of manual operation are reduced, safe resetting of the target piece is guaranteed through the synergistic effect of multiple mechanisms, and the detection accuracy is improved. In addition, the adjusting process of the laser transmitter is optimized, the accuracy and consistency of multiple detection results of the same target piece are ensured, and the requirement for multiple continuous rapid detection can be met.

The invention discloses a laser semi-active and long-wave infrared imaging composite simulator, which is suitable for generating a laser semi-active echo simulation signal, a long-wave infrared dynamic target background and other composite optical environments in a weapon system semi-physical simulation test, and is driven by a simulation control system in real time. Simulation of laser echo energy changes and long-wave dynamic targets and scenes under different distances, different time periods and different working conditions in the missile-target approaching process is achieved, and the system is mainly used for being matched with other systems to achieve the functions of laser semi-active and long-wave infrared imaging, composite guidance detector semi-physical simulation tests, anti-interference performance evaluation and the like. The simulator is mainly composed of a laser target simulation channel, a long-wave infrared scene simulation channel, a common-caliber coupler and the like. A laser target is output through the laser target simulation channel, and a long-wave infrared image is output through the long-wave infrared simulator and finally enters the detector after passing through the coupling device.

The invention discloses a core tube surveying and setting-out method suitable for local non-floor slabs, and belongs to the technical field of building construction. The method specifically comprises the following steps that after formwork removal is conducted on a core tube wall of an operation layer, a set of telescopic leveling assemblies is installed; a laser plumb aligner is placed on the lower layer, laser is made to penetrate through supporting plate pay-off holes in the adjustable supporting plate and the sliding supporting plate, and then the angle of the adjustable supporting plate is adjusted; a laser target is placed on a supporting plate pay-off hole of an adjustable supporting plate, laser of a laser plumb aligner placed on the lower layer is irradiated to the center of the laser target, a total station is erected at a floor pay-off hole in a floor area, and pay-off operation can be normally carried out. One group of telescopic leveling assemblies is changed into two groups of telescopic leveling assemblies which are vertically arranged, a laser target is placed on a lower adjustable supporting plate, and the position of a light spot transmitted from a lower-layer reference point is marked and fixed; a laser plumb aligner is placed on the upper adjustable supporting plate, and laser of the laser plumb aligner is used for plumbing upwards. The technical scheme is used for solving the problem that the layout of a pay-off hole plane is limited under the condition that a core tube floor slab is missing.

The invention discloses a profile steel combination inner support stability monitoring and calibrating device and a monitoring method, and the device comprises a supporting system, a profile steel stand column (1), a profile steel #-shaped cross beam (2), a profile steel inclined strut (3), a profile steel diagonal bracing (4), a profile steel bracket piece (14), a lateral correction system and an axial correction system, the system comprises a pressurizing part (5), a lateral intelligent pressurizing system (6), a pressurizing system bracket (7), a steel support standard part (8) and an axial intelligent pressurizing system (9), and an intelligent terminal control system which comprises a laser target (10), a laser monitor (11), an intelligent oil source pump station (12) and a monitoring host (13). According to the device, detachable modular design is adopted, rapid assembly and reuse of the device are achieved, and the risk of foundation pit deformation is reduced and collapse accidents are avoided by monitoring and correcting deformation deviation of steel support standard parts caused by outer side soil body pressure in the earthwork excavation and foundation construction stages.

This invention discloses a testing device and method for laser shooting targets, relating to the field of laser target quality testing technology. It includes a steel frame, with a raised platform fixed at the bottom right side of the frame. A horizontal platform is integrally formed on one outer wall of the raised platform, and an inner flip-release assembly is installed on the other outer wall of the raised platform. The driving end of the inner flip-release assembly is equipped with an opposing target clamp for clamping the laser target. This invention achieves closed-loop control of the entire process—tilting, resetting, and verifying the laser design function of the laser target—through mechanical automation. This significantly improves the automation level and experimental efficiency of the testing, reduces human error and labor intensity, and the synergistic effect of multiple mechanisms not only ensures the safe resetting of the target but also optimizes the adjustment process of the laser emitter, ensuring the accuracy and consistency of multiple test results for the same target, and meeting the needs of multiple continuous and rapid tests.

This invention relates to the field of intelligent detection technology for fully mechanized coal mining faces, and discloses a method and electronic equipment for linear fusion of the entire working face based on laser target inertial navigation radar. The method includes the following steps: establishing a physical benchmark using a mechanical limiting device at the end of the working face and simultaneously collecting multi-dimensional data such as the coordinates of the connection point, radar point cloud, and inertial navigation attitude; calculating the rotational deviation using the relative tilt angle fitted by the radar point cloud and the absolute pitch angle of the inertial navigation, and combining real-time temperature correction translation parameters to unify the data in the end area to the absolute coordinate system of the inertial navigation; dividing the fusion area according to the distance from the connection point, and performing differentiated weighted fusion and smoothing processing on the converted data and the measured data of the inertial navigation; generating a complete curve for the entire working face using piecewise fitting and calculating the maximum straightness deviation. This invention solves the problem of coordinate alignment of multiple source sensors underground through a physical limiting and dynamic-static combined calibration mechanism, achieving high-precision full-area monitoring of the straightness of the scraper conveyor.